Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!


Index Shark

Sharks are a group of elasmobranch fish characterized by a cartilaginous skeleton, five to seven gill slits on the sides of the head, and pectoral fins that are not fused to the head. [1]

340 relations: Acanthodii, American Society of Clinical Oncology, Ampullae of Lorenzini, Anal sinuses, Anatomical terms of location, Anecdotal evidence, Angelshark, Animal locomotion, Aorta, Apatite, Apex predator, Apparent death, Aquatic feeding mechanisms, Aquatic respiration, Arm, Artery, Asexual reproduction, Asphyxia, Aumakua, Austin Powers, Australia, Baleen, Barbel (anatomy), Basking shark, Batman (1966 film), Batoidea, Benthic zone, Bigeye thresher, Blacktip reef shark, Blood, Blood vessel, Blue shark, Bull shark, Bullhead shark, Calcium phosphate, Cancer, Carcharhiniformes, Caribbean reef shark, Caribbean Sea, Carnivore, Carpet shark, Cartilage, Catshark, Cellular respiration, Cetacea, Chemoreceptor, Chicago, Chimaera, China, Chondrichthyes, ..., Circulatory system, CITES, Clade, Cladodont, Cladoselache, Cladoselachidae, Clasper, Class (biology), Cloaca, Coelacanth, Color blindness, Common thresher, Cone cell, Connective tissue, Convention on the Conservation of Migratory Species of Wild Animals, Conveyor belt, Cookiecutter shark, Cornea, Countercurrent exchange, Cow shark, Cretaceous–Paleogene extinction event, Crustacean, Dakuwaqa, Deep Blue Sea (1999 film), Deep frying, Dinoshark, DNA profiling, Dorsal aorta, Drum line (shark control), Dwarf lanternshark, Early Cretaceous, Earth's magnetic field, Edinburgh Napier University, Egg case (Chondrichthyes), Elasmobranchii, Electric field, Electromagnetic field, Electroreception, Elegestolepis, Eocene, Eugeneodontida, Eye, Fecundity, Female sperm storage, Finding Nemo, Fish, Fish and chips, Fish fin, Fish locomotion, Fish scale, Fishes of the World, Fishing vessel, Flake (fish), Fluid dynamics, Food and Drug Administration, Food chain, Frilled shark, Galeomorphii, Genetic diversity, Gill, Gill raker, Gill slit, Goblin shark, God, Great white shark, Greenland shark, Grey reef shark, Gulf of California, Gums, Hammerhead shark, Hawaii, Hawaiian religion, Hákarl, Hearing, Heart, Heiau, Herring, Hertz, Hexanchiformes, Holocephali, Homeothermy, Horn shark, Houndshark, Houston, Hybodontiformes, Iceland, India, Inner ear, Internal fertilization, International Shark Attack File, International Union for Conservation of Nature, Introduced species, Intromittent organ, Ireland, Isistius, Isurus, IUCN Red List, Jabberjaw, Japan, Jaw, Jaws (film), Jaws (novel), Jersey Shore shark attacks of 1916, John Hawkins (naval commander), Kahuna, Kamohoalii, Kīlauea, Kidney, King mackerel, KwaZulu-Natal, Lamnidae, Lamniformes, Lateral line, Leather, Lemon shark, Lens (anatomy), Leopard shark, Library of Congress, List of longest-living organisms, List of mammalian gestation durations, List of natural horror films, List of prehistoric cartilaginous fish, List of sharks, Lobe (anatomy), Longfin mako shark, Loophole, Luminescence, Mackerel, Mammal, Marine mammal, Marine vertebrate, Mating, Megalodon, Megamouth shark, Memorandum of Understanding on the Conservation of Migratory Sharks, Mercury in fish, Middle English Dictionary, Molar (tooth), Mollusca, Molokai, Monocular, Monterey Bay Aquarium, National Cancer Institute, National Geographic Society, Nature (journal), New South Wales, Nictitating membrane, Nocturnality, Nurse shark, Ocean, Ocean current, Oceanic basin, Oceanic whitetip shark, Offspring, Olfaction, Oophagy, Order (biology), Ordovician, Osmosis, Osteichthyes, Osteoarthritis, Outline of sharks, Oviduct, Oviparity, Ovoviviparity, Oxford English Dictionary, Palau, Paleozoic, Parasitism, Parthenogenesis, Parts-per notation, Pelagic zone, Pele (deity), Penis, Pet store, Peter Benchley, Plankton, Poikilotherm, Polyphyly, Porbeagle, Port Jackson shark, Portuguese dogfish, Posterior cardinal vein, Pridoli epoch, Pupil, Queensland, R/K selection theory, Requiem shark, Rete mirabile, Retina, Right whale, River shark, Rod cell, Rostrum (anatomy), Sand tiger shark, Sawshark, Scalloped hammerhead, School shark, Science (journal), Seafood Watch, Seamount, Serration, Sewage, Sexual maturity, Shark Conservation Act, Shark fin soup, Shark finning, Shark Finning Prohibition Act, Shark meat, Shark threat display, Shark tooth, Shark Trust, Sharktopus, Sharkwater, Shortfin mako shark, Sieve, Silky shark, Silurian, Sister group, Skate (fish), Skull, Smooth-hound, South Africa, Spectrophotometry, Sperm, Spinal cord, Spiny dogfish, Spiracle, Spiral valve, Squalene, Squalidae, Squaliformes, Squalomorphii, Squid, Statistics, Status symbol, Stereoscopy, Steven Spielberg, Stingray, Supermarket, Swell shark, Swordfish, Syfy, Symmoriida, Tail, Tamil language, Tamil Nadu, Tapetum lucidum, Teleost, Telugu language, Tessera, Tetrapod, The Advertiser (Adelaide), The Guardian, The Independent, The Reef (2010 film), The Verge, Thelodonti, Thermoregulation, THOMAS, Thomas Beckington, Thresher shark, Tiger shark, Tilefish, Tom and Jerry, Tonicity, Trimethylamine, United States, United States Court of Appeals for the Ninth Circuit, United States courts of appeals, United States v. Approximately 64,695 Pounds of Shark Fins, University of Texas MD Anderson Cancer Center, Urea, Ventricle (heart), Vertebral column, Vertebrate, Victoria (Australia), Viper dogfish, Viviparity, Walking the plank, Warm-blooded, Western Australian shark cull, Whale shark, Whitetip reef shark, Wobbegong, Xenacanthida, Xenacanthus, Yolk, Yucatec Maya language, Zebra shark. Expand index (290 more) »


Acanthodii or acanthodians (sometimes called spiny sharks) is a paraphyletic class of extinct teleostome fish, sharing features with both bony fish and cartilaginous fish.

New!!: Shark and Acanthodii · See more »

American Society of Clinical Oncology

The American Society of Clinical Oncology (ASCO) is a professional organization representing physicians of all oncology sub-specialties who care for people with cancer.

New!!: Shark and American Society of Clinical Oncology · See more »

Ampullae of Lorenzini

The ampullae of Lorenzini are special sensing organs called electroreceptors, forming a network of jelly-filled pores.

New!!: Shark and Ampullae of Lorenzini · See more »

Anal sinuses

The anal sinuses (rectal sinuses) are furrows in the anal canal, that separate the anal columns from one another.

New!!: Shark and Anal sinuses · See more »

Anatomical terms of location

Standard anatomical terms of location deal unambiguously with the anatomy of animals, including humans.

New!!: Shark and Anatomical terms of location · See more »

Anecdotal evidence

Anecdotal evidence is evidence from anecdotes, i.e., evidence collected in a casual or informal manner and relying heavily or entirely on personal testimony.

New!!: Shark and Anecdotal evidence · See more »


The angelsharks are a group of sharks in the genus Squatina in the family Squatinidae, which are unusual in having flattened bodies and broad pectoral fins that give them a strong resemblance to rays.

New!!: Shark and Angelshark · See more »

Animal locomotion

Animal locomotion, in ethology, is any of a variety of movements or methods that animals use to move from one place to another.

New!!: Shark and Animal locomotion · See more »


The aorta is the main artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries (the common iliac arteries).

New!!: Shark and Aorta · See more »


Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal.

New!!: Shark and Apatite · See more »

Apex predator

An apex predator, also known as an alpha predator or top predator, is a predator at the top of a food chain, with no natural predators.

New!!: Shark and Apex predator · See more »

Apparent death

Apparent death, colloquially known as playing dead, feigning death, or playing possum, is a behavior in which animals take on the appearance of being dead.

New!!: Shark and Apparent death · See more »

Aquatic feeding mechanisms

Aquatic feeding mechanisms face a special difficulty as compared to feeding on land, because the density of water is about the same as that of the prey, so the prey tends to be pushed away when the mouth is closed.

New!!: Shark and Aquatic feeding mechanisms · See more »

Aquatic respiration

Aquatic respiration is the process whereby an aquatic animal obtains oxygen from water.

New!!: Shark and Aquatic respiration · See more »


In human anatomy, the arm is the part of the upper limb between the glenohumeral joint (shoulder joint) and the elbow joint.

New!!: Shark and Arm · See more »


An artery (plural arteries) is a blood vessel that takes blood away from the heart to all parts of the body (tissues, lungs, etc).

New!!: Shark and Artery · See more »

Asexual reproduction

Asexual reproduction is a type of reproduction by which offspring arise from a single organism, and inherit the genes of that parent only; it does not involve the fusion of gametes, and almost never changes the number of chromosomes.

New!!: Shark and Asexual reproduction · See more »


Asphyxia or asphyxiation is a condition of severely deficient supply of oxygen to the body that arises from abnormal breathing.

New!!: Shark and Asphyxia · See more »


In Hawaiian mythology, an ʻaumakua (often spelled aumakua) is a family god, often a deified ancestor.

New!!: Shark and Aumakua · See more »

Austin Powers

The Austin Powers series is a series of American spy action comedy films: Austin Powers: International Man of Mystery (1997), Austin Powers: The Spy Who Shagged Me (1999) and Austin Powers in Goldmember (2002).

New!!: Shark and Austin Powers · See more »


Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania and numerous smaller islands.

New!!: Shark and Australia · See more »


Baleen is a filter-feeder system inside the mouths of baleen whales.

New!!: Shark and Baleen · See more »

Barbel (anatomy)

In fish anatomy and turtle anatomy, a barbel is a slender, whiskerlike sensory organ near the mouth.

New!!: Shark and Barbel (anatomy) · See more »

Basking shark

The basking shark (Cetorhinus maximus) is the second-largest living shark, after the whale shark, and one of three plankton-eating shark species, along with the whale shark and megamouth shark.

New!!: Shark and Basking shark · See more »

Batman (1966 film)

Batman (often promoted as Batman: The Movie) is a 1966 American superhero film based on the ''Batman'' television series, and the first full-length theatrical adaptation of the DC Comics character Batman.

New!!: Shark and Batman (1966 film) · See more »


Batoidea is a superorder of cartilaginous fish commonly known as rays.

New!!: Shark and Batoidea · See more »

Benthic zone

The benthic zone is the ecological region at the lowest level of a body of water such as an ocean or a lake, including the sediment surface and some sub-surface layers.

New!!: Shark and Benthic zone · See more »

Bigeye thresher

The bigeye thresher (Alopias superciliosus) is a species of thresher shark, family Alopiidae, found in temperate and tropical oceans worldwide.

New!!: Shark and Bigeye thresher · See more »

Blacktip reef shark

The blacktip reef shark (Carcharhinus melanopterus) is a species of requiem shark, in the family Carcharhinidae, easily identified by the prominent black tips on its fins (especially on the first dorsal fin and its caudal fin).

New!!: Shark and Blacktip reef shark · See more »


Blood is a body fluid in humans and other animals that delivers necessary substances such as nutrients and oxygen to the cells and transports metabolic waste products away from those same cells.

New!!: Shark and Blood · See more »

Blood vessel

The blood vessels are the part of the circulatory system, and microcirculation, that transports blood throughout the human body.

New!!: Shark and Blood vessel · See more »

Blue shark

The blue shark (Prionace glauca) is a species of requiem shark, in the family Carcharhinidae, that inhabits deep waters in the world's temperate and tropical oceans.

New!!: Shark and Blue shark · See more »

Bull shark

The bull shark (Carcharhinus leucas), also known as the Zambezi shark (informally "zambi") in Africa, and Lake Nicaragua shark in Nicaragua, is a requiem shark commonly found worldwide in warm, shallow waters along coasts and in rivers.

New!!: Shark and Bull shark · See more »

Bullhead shark

The bullhead sharks are a small order (Heterodontiformes) of basal modern sharks (Neoselachii).

New!!: Shark and Bullhead shark · See more »

Calcium phosphate

Calcium phosphate is a family of materials and minerals containing calcium ions (Ca2+) together with inorganic phosphate anions.

New!!: Shark and Calcium phosphate · See more »


Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body.

New!!: Shark and Cancer · See more »


Carcharhiniformes, the ground sharks, with over 270 species, are the largest order of sharks.

New!!: Shark and Carcharhiniformes · See more »

Caribbean reef shark

The Caribbean reef shark (Carcharhinus perezii) is a species of requiem shark, belonging to the family Carcharhinidae.

New!!: Shark and Caribbean reef shark · See more »

Caribbean Sea

The Caribbean Sea (Mar Caribe; Mer des Caraïbes; Caraïbische Zee) is a sea of the Atlantic Ocean in the tropics of the Western Hemisphere.

New!!: Shark and Caribbean Sea · See more »


A carnivore, meaning "meat eater" (Latin, caro, genitive carnis, meaning "meat" or "flesh" and vorare meaning "to devour"), is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging.

New!!: Shark and Carnivore · See more »

Carpet shark

Carpet sharks are sharks classified in the order Orectolobiformes.

New!!: Shark and Carpet shark · See more »


Cartilage is a resilient and smooth elastic tissue, a rubber-like padding that covers and protects the ends of long bones at the joints, and is a structural component of the rib cage, the ear, the nose, the bronchial tubes, the intervertebral discs, and many other body components.

New!!: Shark and Cartilage · See more »


Catsharks are ground sharks of the family Scyliorhinidae.

New!!: Shark and Catshark · See more »

Cellular respiration

Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert biochemical energy from nutrients into adenosine triphosphate (ATP), and then release waste products.

New!!: Shark and Cellular respiration · See more »


Cetacea are a widely distributed and diverse clade of aquatic mammals that today consists of the whales, dolphins, and porpoises.

New!!: Shark and Cetacea · See more »


A chemoreceptor, also known as chemosensor, is a specialized sensory receptor cell which transduces (responds to) a chemical substance (endogenous or induced) and generates a biological signal.

New!!: Shark and Chemoreceptor · See more »


Chicago, officially the City of Chicago, is the third most populous city in the United States, after New York City and Los Angeles.

New!!: Shark and Chicago · See more »


Chimaeras the order Chimaeriformes, known informally as ghost sharks, rat fish (not to be confused with the rattails), spookfish (not to be confused with the true spookfish of the family Opisthoproctidae), or rabbit fish (not to be confused with the family Siganidae).

New!!: Shark and Chimaera · See more »


China, officially the People's Republic of China (PRC), is a unitary one-party sovereign state in East Asia and the world's most populous country, with a population of around /1e9 round 3 billion.

New!!: Shark and China · See more »


Chondrichthyes (from Greek χονδρ- chondr- 'cartilage', ἰχθύς ichthys 'fish') is a class that contains the cartilaginous fishes: they are jawed vertebrates with paired fins, paired nares, scales, a heart with its chambers in series, and skeletons made of cartilage rather than bone.

New!!: Shark and Chondrichthyes · See more »

Circulatory system

The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.

New!!: Shark and Circulatory system · See more »


CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora, also known as the Washington Convention) is a multilateral treaty to protect endangered plants and animals.

New!!: Shark and CITES · See more »


A clade (from κλάδος, klados, "branch"), also known as monophyletic group, is a group of organisms that consists of a common ancestor and all its lineal descendants, and represents a single "branch" on the "tree of life".

New!!: Shark and Clade · See more »


This is a typical Cladodont tooth, of a shark called ''Glikmanius'' Cladodont (from Latin cladus, meaning branch and Greek Odon, meaning tooth) is the term for a common category of early Devonian shark known primarily for its "multi-cusped" tooth consisting of one long blade surrounded by many short, fork-like tines, designed to catch food that was swallowed whole, instead of being used to saw off chunks of meat like many modern sharks.

New!!: Shark and Cladodont · See more »


Cladoselache is a genus of extinct shark.

New!!: Shark and Cladoselache · See more »


Cladoselachidae is an extinct family of cartilaginous fishes and among the earliest predecessors of modern sharks.

New!!: Shark and Cladoselachidae · See more »


In biology, a clasper is a male anatomical structure found in some groups of animals, used in mating.

New!!: Shark and Clasper · See more »

Class (biology)

In biological classification, class (classis) is a taxonomic rank, as well as a taxonomic unit, a taxon, in that rank.

New!!: Shark and Class (biology) · See more »


In animal anatomy, a cloaca (plural cloacae or) is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals, opening at the vent.

New!!: Shark and Cloaca · See more »


The coelacanths constitute a now rare order of fish that includes two extant species in the genus Latimeria: the West Indian Ocean coelacanth (Latimeria chalumnae) primarily found near the Comoro Islands off the east coast of Africa and the Indonesian coelacanth (Latimeria menadoensis).

New!!: Shark and Coelacanth · See more »

Color blindness

Color blindness, also known as color vision deficiency, is the decreased ability to see color or differences in color.

New!!: Shark and Color blindness · See more »

Common thresher

The common thresher (Alopias vulpinus), also known by many names such as Atlantic thresher, big-eye thresher, fox shark, green thresher, swingletail, slasher, swiveltail, thintail thresher, whip-tailed shark and Zorro thresher shark, is the largest species of thresher shark, family Alopiidae, reaching some in length.

New!!: Shark and Common thresher · See more »

Cone cell

Cone cells, or cones, are one of three types of photoreceptor cells in the retina of mammalian eyes (e.g. the human eye).

New!!: Shark and Cone cell · See more »

Connective tissue

Connective tissue (CT) is one of the four basic types of animal tissue, along with epithelial tissue, muscle tissue, and nervous tissue.

New!!: Shark and Connective tissue · See more »

Convention on the Conservation of Migratory Species of Wild Animals

The Convention on the Conservation of Migratory Species of Wild Animals -- more commonly abbreviated to just the Convention on Migratory Species (CMS) or the Bonn Convention and CMS COP is known as Global Wildlife conference—aims to conserve terrestrial, marine and avian migratory species throughout their range.

New!!: Shark and Convention on the Conservation of Migratory Species of Wild Animals · See more »

Conveyor belt

A conveyor belt is the carrying medium of a belt conveyor system (often shortened to belt conveyor).

New!!: Shark and Conveyor belt · See more »

Cookiecutter shark

The cookiecutter shark (Isistius brasiliensis), also called the cigar shark, is a species of small dogfish shark in the family Dalatiidae.

New!!: Shark and Cookiecutter shark · See more »


The cornea is the transparent front part of the eye that covers the iris, pupil, and anterior chamber.

New!!: Shark and Cornea · See more »

Countercurrent exchange

Countercurrent exchange is a mechanism occurring in nature and mimicked in industry and engineering, in which there is a crossover of some property, usually heat or some component, between two flowing bodies flowing in opposite directions to each other.

New!!: Shark and Countercurrent exchange · See more »

Cow shark

Cow sharks are a family, the Hexanchidae, of sharks characterized by an additional pair or pairs of gill slits.

New!!: Shark and Cow shark · See more »

Cretaceous–Paleogene extinction event

The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of some three-quarters of the plant and animal species on Earth, approximately 66 million years ago.

New!!: Shark and Cretaceous–Paleogene extinction event · See more »


Crustaceans (Crustacea) form a large, diverse arthropod taxon which includes such familiar animals as crabs, lobsters, crayfish, shrimp, krill, woodlice, and barnacles.

New!!: Shark and Crustacean · See more »


In Fijian mythology, Dakuwaqa (Dakuwanga) is a shark-god.

New!!: Shark and Dakuwaqa · See more »

Deep Blue Sea (1999 film)

Deep Blue Sea is a 1999 American science fiction horror film directed by Renny Harlin.

New!!: Shark and Deep Blue Sea (1999 film) · See more »

Deep frying

Deep frying (also referred to as deep fat frying) is a cooking method in which food is submerged in hot fat, most commonly oil, rather than the shallow oil used in conventional frying, done in a frying pan.

New!!: Shark and Deep frying · See more »


Dinoshark is a 2010 low budget Syfy horror film.

New!!: Shark and Dinoshark · See more »

DNA profiling

DNA profiling (also called DNA fingerprinting, DNA testing, or DNA typing) is the process of determining an individual's DNA characteristics, which are as unique as fingerprints.

New!!: Shark and DNA profiling · See more »

Dorsal aorta

The dorsal aortae are paired (left and right) embryological vessels which progress to form the descending aorta.

New!!: Shark and Dorsal aorta · See more »

Drum line (shark control)

A drum line is an unmanned aquatic trap used to lure and capture large sharks using baited hooks.

New!!: Shark and Drum line (shark control) · See more »

Dwarf lanternshark

The dwarf lanternshark (Etmopterus perryi) is a little-known species of dogfish shark in the family Etmopteridae and possibly the smallest shark in the world, reaching a maximum known length of.

New!!: Shark and Dwarf lanternshark · See more »

Early Cretaceous

The Early Cretaceous/Middle Cretaceous (geochronological name) or the Lower Cretaceous (chronostratigraphic name), is the earlier or lower of the two major divisions of the Cretaceous.

New!!: Shark and Early Cretaceous · See more »

Earth's magnetic field

Earth's magnetic field, also known as the geomagnetic field, is the magnetic field that extends from the Earth's interior out into space, where it meets the solar wind, a stream of charged particles emanating from the Sun.

New!!: Shark and Earth's magnetic field · See more »

Edinburgh Napier University

Edinburgh Napier University is a public university in Edinburgh, Scotland.

New!!: Shark and Edinburgh Napier University · See more »

Egg case (Chondrichthyes)

An egg case or egg capsule is the casing that surrounds the eggs of oviparous sharks, skates, and chimaeras.

New!!: Shark and Egg case (Chondrichthyes) · See more »


Elasmobranchii is a subclass of Chondrichthyes or cartilaginous fish, including the sharks (superorder Selachii) and the rays, skates, and sawfish (superorder Batoidea).

New!!: Shark and Elasmobranchii · See more »

Electric field

An electric field is a vector field surrounding an electric charge that exerts force on other charges, attracting or repelling them.

New!!: Shark and Electric field · See more »

Electromagnetic field

An electromagnetic field (also EMF or EM field) is a physical field produced by electrically charged objects.

New!!: Shark and Electromagnetic field · See more »


Electroreception or electroception is the biological ability to perceive natural electrical stimuli.

New!!: Shark and Electroreception · See more »


Elegestolepis is a primitive shark that lived during the Silurian and Devonian periods.

New!!: Shark and Elegestolepis · See more »


The Eocene Epoch, lasting from, is a major division of the geologic timescale and the second epoch of the Paleogene Period in the Cenozoic Era.

New!!: Shark and Eocene · See more »


The Eugeneodontida is an extinct and poorly known order of bizarre cartilaginous fishes.

New!!: Shark and Eugeneodontida · See more »


Eyes are organs of the visual system.

New!!: Shark and Eye · See more »


In human demography and population biology, fecundity is the potential for reproduction of an organism or population, measured by the number of gametes (eggs), seed set, or asexual propagules.

New!!: Shark and Fecundity · See more »

Female sperm storage

Female sperm storage is a biological process and often a type of sexual selection in which sperm cells transferred to a female during mating are temporarily retained within a specific part of the reproductive tract before the oocyte, or egg, is fertilized.

New!!: Shark and Female sperm storage · See more »

Finding Nemo

Finding Nemo is a 2003 American computer-animated adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures.

New!!: Shark and Finding Nemo · See more »


Fish are gill-bearing aquatic craniate animals that lack limbs with digits.

New!!: Shark and Fish · See more »

Fish and chips

Fish and chips is a hot dish of English origin consisting of fried battered fish and hot potato chips.

New!!: Shark and Fish and chips · See more »

Fish fin

Fins are usually the most distinctive anatomical features of a fish.

New!!: Shark and Fish fin · See more »

Fish locomotion

Fish locomotion is the variety of types of animal locomotion used by fish, principally by swimming.

New!!: Shark and Fish locomotion · See more »

Fish scale

The skin of most fishes is covered with scales, which, in many cases, are animal reflectors or produce animal coloration.

New!!: Shark and Fish scale · See more »

Fishes of the World

Fishes of the World by Joseph S. Nelson is a standard reference for fish systematics.

New!!: Shark and Fishes of the World · See more »

Fishing vessel

A fishing vessel is a boat or ship used to catch fish in the sea, or on a lake or river.

New!!: Shark and Fishing vessel · See more »

Flake (fish)

Flake is a term used in Australia to indicate the flesh of any of several species of small shark, particularly the gummy shark.

New!!: Shark and Flake (fish) · See more »

Fluid dynamics

In physics and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids - liquids and gases.

New!!: Shark and Fluid dynamics · See more »

Food and Drug Administration

The Food and Drug Administration (FDA or USFDA) is a federal agency of the United States Department of Health and Human Services, one of the United States federal executive departments.

New!!: Shark and Food and Drug Administration · See more »

Food chain

A food chain is a linear network of links in a food web starting from producer organisms (such as grass or trees which use radiation from the Sun to make their food) and ending at apex predator species (like grizzly bears or killer whales), detritivores (like earthworms or woodlice), or decomposer species (such as fungi or bacteria).

New!!: Shark and Food chain · See more »

Frilled shark

The frilled shark (Chlamydoselachus anguineus) is one of two extant species of shark in the family Chlamydoselachidae, with a wide but patchy distribution in the Atlantic and Pacific Oceans.

New!!: Shark and Frilled shark · See more »


Galeomorphii is a superorder of cartilaginous fishes which includes all modern sharks except the dogfish and its relatives.

New!!: Shark and Galeomorphii · See more »

Genetic diversity

Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species.

New!!: Shark and Genetic diversity · See more »


A gill is a respiratory organ found in many aquatic organisms that extracts dissolved oxygen from water and excretes carbon dioxide.

New!!: Shark and Gill · See more »

Gill raker

Gill rakers in fish are bony or cartilaginous processes that project from the branchial arch (gill arch) and are involved with suspension feeding tiny prey.

New!!: Shark and Gill raker · See more »

Gill slit

Gill slits are individual openings to gills, i.e., multiple gill arches, which lack a single outer cover.

New!!: Shark and Gill slit · See more »

Goblin shark

The goblin shark (Mitsukurina owstoni) is a rare species of deep-sea shark.

New!!: Shark and Goblin shark · See more »


In monotheistic thought, God is conceived of as the Supreme Being and the principal object of faith.

New!!: Shark and God · See more »

Great white shark

The great white shark (Carcharodon carcharias), commonly known as the great white or the white shark, is a species of large mackerel shark which can be found in the coastal surface waters of all the major oceans.

New!!: Shark and Great white shark · See more »

Greenland shark

The Greenland shark (Somniosus microcephalus), also known as the gurry shark or grey shark, or by the Kalaallisut name eqalussuaq, is a large shark of the family Somniosidae ("sleeper sharks"), closely related to the Pacific and southern sleeper sharks.

New!!: Shark and Greenland shark · See more »

Grey reef shark

The grey reef shark (Carcharhinus amblyrhynchos, sometimes misspelled amblyrhynchus or amblyrhinchos) is a species of requiem shark, in the family Carcharhinidae.

New!!: Shark and Grey reef shark · See more »

Gulf of California

The Gulf of California (also known as the Sea of Cortez, Sea of Cortés or Vermilion Sea; locally known in the Spanish language as Mar de Cortés or Mar Bermejo or Golfo de California) is a marginal sea of the Pacific Ocean that separates the Baja California Peninsula from the Mexican mainland.

New!!: Shark and Gulf of California · See more »


The gums or gingiva (plural: gingivae), consist of the mucosal tissue that lies over the mandible and maxilla inside the mouth.

New!!: Shark and Gums · See more »

Hammerhead shark

The hammerhead sharks are a group of sharks in the family Sphyrnidae, so named for the unusual and distinctive structure of their heads, which are flattened and laterally extended into a "hammer" shape called a cephalofoil.

New!!: Shark and Hammerhead shark · See more »


Hawaii (Hawaii) is the 50th and most recent state to have joined the United States, having received statehood on August 21, 1959.

New!!: Shark and Hawaii · See more »

Hawaiian religion

Hawaiian religion encompasses the indigenous religious beliefs and practices of the Native Hawaiians.

New!!: Shark and Hawaiian religion · See more »


Kæstur hákarl (Icelandic for "fermented shark") is a national dish of Iceland consisting of a Greenland shark (Somniosus microcephalus) or other sleeper shark which has been cured with a particular fermentation process and hung to dry for four to five months.

New!!: Shark and Hákarl · See more »


Hearing, or auditory perception, is the ability to perceive sounds by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear.

New!!: Shark and Hearing · See more »


The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.

New!!: Shark and Heart · See more »


A heiau is a Hawaiian temple.

New!!: Shark and Heiau · See more »


Herring are forage fish, mostly belonging to the family Clupeidae.

New!!: Shark and Herring · See more »


The hertz (symbol: Hz) is the derived unit of frequency in the International System of Units (SI) and is defined as one cycle per second.

New!!: Shark and Hertz · See more »


The Hexanchiformes are the order consisting of the most primitive types of sharks, and numbering just seven extant species.

New!!: Shark and Hexanchiformes · See more »


The subclass Holocephali ("complete heads") is a taxon of cartilaginous fish in the class Chondrichthyes.

New!!: Shark and Holocephali · See more »


Homeothermy or homothermy is thermoregulation that maintains a stable internal body temperature regardless of external influence.

New!!: Shark and Homeothermy · See more »

Horn shark

The horn shark (Heterodontus francisci) is a species of bullhead shark, in the family Heterodontidae.

New!!: Shark and Horn shark · See more »


Houndsharks, the Triakidae, are a family of ground sharks, consisting of about 40 species in nine genera.

New!!: Shark and Houndshark · See more »


Houston is the most populous city in the U.S. state of Texas and the fourth most populous city in the United States, with a census-estimated 2017 population of 2.312 million within a land area of.

New!!: Shark and Houston · See more »


Hybodontiformes, also called hybodonts, are an extinct subset of Elasmobranchii (sharks, skates and rays) which existed from the Devonian to the Miocene.

New!!: Shark and Hybodontiformes · See more »


Iceland is a Nordic island country in the North Atlantic, with a population of and an area of, making it the most sparsely populated country in Europe.

New!!: Shark and Iceland · See more »


India (IAST), also called the Republic of India (IAST), is a country in South Asia.

New!!: Shark and India · See more »

Inner ear

The inner ear (internal ear, auris interna) is the innermost part of the vertebrate ear.

New!!: Shark and Inner ear · See more »

Internal fertilization

Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent.

New!!: Shark and Internal fertilization · See more »

International Shark Attack File

The International Shark Attack File is a global database of shark attacks.

New!!: Shark and International Shark Attack File · See more »

International Union for Conservation of Nature

The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources.

New!!: Shark and International Union for Conservation of Nature · See more »

Introduced species

An introduced species (alien species, exotic species, non-indigenous species, or non-native species) is a species living outside its native distributional range, which has arrived there by human activity, either deliberate or accidental.

New!!: Shark and Introduced species · See more »

Intromittent organ

An intromittent organ is a general term for an external organ of a male organism that is specialized to deliver sperm during copulation.

New!!: Shark and Intromittent organ · See more »


Ireland (Éire; Ulster-Scots: Airlann) is an island in the North Atlantic.

New!!: Shark and Ireland · See more »


Isistius is a genus of dogfish sharks in the family Dalatiidae.

New!!: Shark and Isistius · See more »


Isurus is a genus of mackerel sharks in the family Lamnidae, commonly known as the mako sharks.

New!!: Shark and Isurus · See more »

IUCN Red List

The IUCN Red List of Threatened Species (also known as the IUCN Red List or Red Data List), founded in 1964, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species.

New!!: Shark and IUCN Red List · See more »


Jabberjaw is a Saturday morning animated series created by Joe Ruby and Ken Spears and produced by Hanna-Barbera which aired on ABC from September 11 to December 18, 1976.

New!!: Shark and Jabberjaw · See more »


Japan (日本; Nippon or Nihon; formally 日本国 or Nihon-koku, lit. "State of Japan") is a sovereign island country in East Asia.

New!!: Shark and Japan · See more »


The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food.

New!!: Shark and Jaw · See more »

Jaws (film)

Jaws is a 1975 American thriller film directed by Steven Spielberg and based on Peter Benchley's 1974 novel of the same name.

New!!: Shark and Jaws (film) · See more »

Jaws (novel)

Jaws is a 1974 novel by American writer Peter Benchley.

New!!: Shark and Jaws (novel) · See more »

Jersey Shore shark attacks of 1916

The Jersey Shore shark attacks of 1916 were a series of shark attacks along the coast of New Jersey, in the United States, between July 1 and 12, 1916, in which four people were killed and one injured.

New!!: Shark and Jersey Shore shark attacks of 1916 · See more »

John Hawkins (naval commander)

Admiral Sir John Hawkins (also spelled as Hawkyns) (1532 – 12 November 1595) was an English slave trader, naval commander and administrator, merchant, navigator, shipbuilder and privateer.

New!!: Shark and John Hawkins (naval commander) · See more »


Kahuna is a Hawaiian word, defined as a "priest, sorcerer, magician, wizard, minister, expert in any profession".

New!!: Shark and Kahuna · See more »


In Hawaiian mythology, Ka-moho-aliʻi is a shark god and a brother of Kāne Milohai, Pele, Kapo, Nāmaka and Hiʻiaka.

New!!: Shark and Kamohoalii · See more »


Kīlauea is a currently active shield volcano in the Hawaiian Islands, and the most active of the five volcanoes that together form the island of Hawaiokinai.

New!!: Shark and Kīlauea · See more »


The kidneys are two bean-shaped organs present in left and right sides of the body in vertebrates.

New!!: Shark and Kidney · See more »

King mackerel

The king mackerel or kingfish (Scomberomorus cavalla) is a migratory species of mackerel of the western Atlantic Ocean and Gulf of Mexico.

New!!: Shark and King mackerel · See more »


KwaZulu-Natal (also referred to as KZN and known as "the garden province") is a province of South Africa that was created in 1994 when the Zulu bantustan of KwaZulu ("Place of the Zulu" in Zulu) and Natal Province were merged.

New!!: Shark and KwaZulu-Natal · See more »


The Lamnidae are the family of mackerel or white sharks. They are large, fast-swimming sharks, found in oceans worldwide.

New!!: Shark and Lamnidae · See more »


The Lamniformes (from the Greek word, Lamna "fish of prey") are an order of sharks commonly known as mackerel sharks (which may also refer specifically to the family Lamnidae).

New!!: Shark and Lamniformes · See more »

Lateral line

The lateral line is a system of sense organs found in aquatic vertebrates, used to detect movement, vibration, and pressure gradients in the surrounding water.

New!!: Shark and Lateral line · See more »


Leather is a durable and flexible material created by tanning animal rawhides, mostly cattle hide.

New!!: Shark and Leather · See more »

Lemon shark

The lemon shark (Negaprion brevirostris) is a stocky and powerful shark.

New!!: Shark and Lemon shark · See more »

Lens (anatomy)

The lens is a transparent, biconvex structure in the eye that, along with the cornea, helps to refract light to be focused on the retina.

New!!: Shark and Lens (anatomy) · See more »

Leopard shark

The leopard shark (Triakis semifasciata) is a species of houndshark, in the family Triakidae.

New!!: Shark and Leopard shark · See more »

Library of Congress

The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the de facto national library of the United States.

New!!: Shark and Library of Congress · See more »

List of longest-living organisms

This is a list of the longest-living organisms; that is, the individuals (in some instances, clones) of a species.

New!!: Shark and List of longest-living organisms · See more »

List of mammalian gestation durations

No description.

New!!: Shark and List of mammalian gestation durations · See more »

List of natural horror films

Natural horror (also known as creature features) is a subgenre of horror films that features natural forces, typically in the form of animals or plants, that pose a threat to human characters.

New!!: Shark and List of natural horror films · See more »

List of prehistoric cartilaginous fish

This list of prehistoric cartilaginous fish is an attempt to create a comprehensive listing of all genera that have ever been included in the class chondrichthyes and are known from the fossil record.

New!!: Shark and List of prehistoric cartilaginous fish · See more »

List of sharks

Sharks belong to the superorder Selachimorpha in the subclass Elasmobranchii, in the class Chondrichthyes.

New!!: Shark and List of sharks · See more »

Lobe (anatomy)

In anatomy, a lobe is a clear anatomical division or extension of an organ (as seen for example in the brain, the lung, liver or the kidney) that can be determined without the use of a microscope at the gross anatomy level.

New!!: Shark and Lobe (anatomy) · See more »

Longfin mako shark

The longfin mako shark (Isurus paucus) is a species of mackerel shark in the family Lamnidae, with a probable worldwide distribution in temperate and tropical waters.

New!!: Shark and Longfin mako shark · See more »


A loophole is an ambiguity or inadequacy in a system, such as a law or security, which can be used to circumvent or otherwise avoid the purpose, implied or explicitly stated, of the system.

New!!: Shark and Loophole · See more »


Luminescence is emission of light by a substance not resulting from heat; it is thus a form of cold-body radiation.

New!!: Shark and Luminescence · See more »


Mackerel is a common name applied to a number of different species of pelagic fish, mostly, but not exclusively, from the family Scombridae.

New!!: Shark and Mackerel · See more »


Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.

New!!: Shark and Mammal · See more »

Marine mammal

Marine mammals are aquatic mammals that rely on the ocean and other marine ecosystems for their existence.

New!!: Shark and Marine mammal · See more »

Marine vertebrate

Marine vertebrates are vertebrates which live in a marine environment.

New!!: Shark and Marine vertebrate · See more »


In biology, mating (or mateing in British English) is the pairing of either opposite-sex or hermaphroditic organisms, usually for the purposes of sexual reproduction.

New!!: Shark and Mating · See more »


Megalodon (Carcharocles megalodon), meaning "big tooth", is an extinct species of shark that lived approximately 23 to 2.6 million years ago (mya), during the Early Miocene to the end of the Pliocene.

New!!: Shark and Megalodon · See more »

Megamouth shark

The megamouth shark (Megachasma pelagios) is a species of deepwater shark.

New!!: Shark and Megamouth shark · See more »

Memorandum of Understanding on the Conservation of Migratory Sharks

The Memorandum of Understanding on the Conservation of Migratory Sharks is an international instrument for the conservation of migratory species of sharks.

New!!: Shark and Memorandum of Understanding on the Conservation of Migratory Sharks · See more »

Mercury in fish

Fish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organic compound of mercury.

New!!: Shark and Mercury in fish · See more »

Middle English Dictionary

The Middle English Dictionary is a dictionary of Middle English published by the University of Michigan.

New!!: Shark and Middle English Dictionary · See more »

Molar (tooth)

The molars or molar teeth are large, flat teeth at the back of the mouth.

New!!: Shark and Molar (tooth) · See more »


Mollusca is a large phylum of invertebrate animals whose members are known as molluscs or mollusksThe formerly dominant spelling mollusk is still used in the U.S. — see the reasons given in Gary Rosenberg's.

New!!: Shark and Mollusca · See more »


Molokai (Hawaiian), nicknamed “The Friendly Isle”, is the fifth largest island of eight major islands that make up the Hawaiian Island Chain in the middle of the Pacific Ocean.

New!!: Shark and Molokai · See more »


A monocular is a modified refracting telescope used to magnify the images of distant objects by passing light through a series of lenses and usually prisms, the application of prisms resulting in a lightweight, compact telescope.

New!!: Shark and Monocular · See more »

Monterey Bay Aquarium

Monterey Bay Aquarium is a nonprofit public aquarium in Monterey, California.

New!!: Shark and Monterey Bay Aquarium · See more »

National Cancer Institute

The National Cancer Institute (NCI) is part of the National Institutes of Health (NIH), which is one of eleven agencies that are part of the U.S. Department of Health and Human Services.

New!!: Shark and National Cancer Institute · See more »

National Geographic Society

The National Geographic Society (NGS), headquartered in Washington, D.C., United States, is one of the largest non-profit scientific and educational institutions in the world.

New!!: Shark and National Geographic Society · See more »

Nature (journal)

Nature is a British multidisciplinary scientific journal, first published on 4 November 1869.

New!!: Shark and Nature (journal) · See more »

New South Wales

New South Wales (abbreviated as NSW) is a state on the east coast of:Australia.

New!!: Shark and New South Wales · See more »

Nictitating membrane

The nictitating membrane (from Latin nictare, to blink) is a transparent or translucent third eyelid present in some animals that can be drawn across the eye from the medial canthus for protection and to moisten it while maintaining vision.

New!!: Shark and Nictitating membrane · See more »


Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day.

New!!: Shark and Nocturnality · See more »

Nurse shark

The nurse shark (Ginglymostoma cirratum) is an elasmobranch fish within the family Ginglymostomatidae.

New!!: Shark and Nurse shark · See more »


An ocean (the sea of classical antiquity) is a body of saline water that composes much of a planet's hydrosphere.

New!!: Shark and Ocean · See more »

Ocean current

An ocean current is a seasonal directed movement of sea water generated by forces acting upon this mean flow, such as wind, the Coriolis effect, breaking waves, cabbing, temperature and salinity differences, while tides are caused by the gravitational pull of the Sun and Moon.

New!!: Shark and Ocean current · See more »

Oceanic basin

In hydrology, an oceanic basin may be anywhere on Earth that is covered by seawater but geologically ocean basins are large geologic basins that are below sea level.

New!!: Shark and Oceanic basin · See more »

Oceanic whitetip shark

The oceanic whitetip shark (Carcharhinus longimanus), also known as Brown Milbert's sand bar shark, brown shark, nigano shark, oceanic white-tipped whaler and silvertip shark, is a large pelagic requiem shark inhabiting tropical and warm temperate seas.

New!!: Shark and Oceanic whitetip shark · See more »


In biology, offspring are the young born of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms.

New!!: Shark and Offspring · See more »


Olfaction is a chemoreception that forms the sense of smell.

New!!: Shark and Olfaction · See more »


Oophagy sometimes ovophagy, literally "egg eating", is the practice of embryos feeding on eggs produced by the ovary while still inside the mother's uterus.

New!!: Shark and Oophagy · See more »

Order (biology)

In biological classification, the order (ordo) is.

New!!: Shark and Order (biology) · See more »


The Ordovician is a geologic period and system, the second of six periods of the Paleozoic Era.

New!!: Shark and Ordovician · See more »


Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.

New!!: Shark and Osmosis · See more »


Osteichthyes, popularly referred to as the bony fish, is a diverse taxonomic group of fish that have skeletons primarily composed of bone tissue, as opposed to cartilage.

New!!: Shark and Osteichthyes · See more »


Osteoarthritis (OA) is a type of joint disease that results from breakdown of joint cartilage and underlying bone.

New!!: Shark and Osteoarthritis · See more »

Outline of sharks

The following outline is provided as an overview of and topical guide to sharks: Sharks (superorder Selachimorpha) are a type of fish with a full cartilaginous skeleton and a highly streamlined body.

New!!: Shark and Outline of sharks · See more »


In vertebrates, other than mammals, the passageway from the ovaries to the outside of the body is known as the oviduct.

New!!: Shark and Oviduct · See more »


Oviparous animals are animals that lay eggs, with little or no other embryonic development within the mother.

New!!: Shark and Oviparity · See more »


Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother's body until they are ready to hatch.

New!!: Shark and Ovoviviparity · See more »

Oxford English Dictionary

The Oxford English Dictionary (OED) is the main historical dictionary of the English language, published by the Oxford University Press.

New!!: Shark and Oxford English Dictionary · See more »


Palau (historically Belau, Palaos, or Pelew), officially the Republic of Palau (Beluu er a Belau), is an island country located in the western Pacific Ocean.

New!!: Shark and Palau · See more »


The Paleozoic (or Palaeozoic) Era (from the Greek palaios (παλαιός), "old" and zoe (ζωή), "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon.

New!!: Shark and Paleozoic · See more »


In evolutionary biology, parasitism is a relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

New!!: Shark and Parasitism · See more »


Parthenogenesis (from the Greek label + label) is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization.

New!!: Shark and Parthenogenesis · See more »

Parts-per notation

In science and engineering, the parts-per notation is a set of pseudo-units to describe small values of miscellaneous dimensionless quantities, e.g. mole fraction or mass fraction.

New!!: Shark and Parts-per notation · See more »

Pelagic zone

The pelagic zone consists of the water column of the open ocean, and can be further divided into regions by depth.

New!!: Shark and Pelagic zone · See more »

Pele (deity)

In the Hawaiian religion, Pele (pronounced), is the goddess of fire, lightning, wind and volcanoes and the creator of the Hawaiian Islands.

New!!: Shark and Pele (deity) · See more »


A penis (plural penises or penes) is the primary sexual organ that male animals use to inseminate sexually receptive mates (usually females and hermaphrodites) during copulation.

New!!: Shark and Penis · See more »

Pet store

A pet store or pet shop is a retail business which sells different kinds of animals to the public.

New!!: Shark and Pet store · See more »

Peter Benchley

Peter Bradford Benchley (May 8, 1940 – February 11, 2006) was an American author and screenwriter.

New!!: Shark and Peter Benchley · See more »


Plankton (singular plankter) are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current.

New!!: Shark and Plankton · See more »


A poikilotherm is an animal whose internal temperature varies considerably.

New!!: Shark and Poikilotherm · See more »


A polyphyletic group is a set of organisms, or other evolving elements, that have been grouped together but do not share an immediate common ancestor.

New!!: Shark and Polyphyly · See more »


The porbeagle (Lamna nasus) is a species of mackerel shark in the family Lamnidae, distributed widely in the cold and temperate marine waters of the North Atlantic and Southern Hemisphere.

New!!: Shark and Porbeagle · See more »

Port Jackson shark

The Port Jackson shark (Heterodontus portusjacksoni) is a nocturnal, oviparous (egg laying) type of bullhead shark of the family Heterodontidae, found in the coastal region of southern Australia, including the waters off Port Jackson.

New!!: Shark and Port Jackson shark · See more »

Portuguese dogfish

The Portuguese dogfish or Portuguese shark (Centroscymnus coelolepis) is a species of sleeper shark of the family Somniosidae.

New!!: Shark and Portuguese dogfish · See more »

Posterior cardinal vein

The postcardinal veins or posterior cardinal veins join with the corresponding right and left cardinal veins to form the left common cardinal veins, which empty in the sinus venosus.

New!!: Shark and Posterior cardinal vein · See more »

Pridoli epoch

In the geologic timescale, the Pridoli epoch of the Silurian period of the Paleozoic era of the Phanerozoic eon is comprehended between 423 ± 1.5 and 419.2 ± 2.8 mya (million years ago), approximately.

New!!: Shark and Pridoli epoch · See more »


The pupil is a hole located in the center of the iris of the eye that allows light to strike the retina.

New!!: Shark and Pupil · See more »


Queensland (abbreviated as Qld) is the second-largest and third-most populous state in the Commonwealth of Australia.

New!!: Shark and Queensland · See more »

R/K selection theory

In ecology, r/K selection theory relates to the selection of combinations of traits in an organism that trade off between quantity and quality of offspring.

New!!: Shark and R/K selection theory · See more »

Requiem shark

Requiem sharks are sharks of the family Carcharhinidae in the order Carcharhiniformes, containing migratory, live-bearing sharks of warm seas (sometimes of brackish or fresh water) such as the spinner shark, the blacknose shark, the blacktip shark, the grey reef shark, and the blacktip reef shark.

New!!: Shark and Requiem shark · See more »

Rete mirabile

A rete mirabile (Latin for "wonderful net"; plural retia mirabilia) is a complex of arteries and veins lying very close to each other, found in some vertebrates, mainly warm-blooded ones.

New!!: Shark and Rete mirabile · See more »


The retina is the innermost, light-sensitive "coat", or layer, of shell tissue of the eye of most vertebrates and some molluscs.

New!!: Shark and Retina · See more »

Right whale

Right whales or black whales are three species of large baleen whales of the genus Eubalaena: the North Atlantic right whale (E. glacialis), the North Pacific right whale (E. japonica) and the Southern right whale (E. australis).

New!!: Shark and Right whale · See more »

River shark

Glyphis is a genus in the family Carcharhinidae, commonly known as the river sharks.

New!!: Shark and River shark · See more »

Rod cell

Rod cells are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor, cone cells.

New!!: Shark and Rod cell · See more »

Rostrum (anatomy)

In anatomy, the term rostrum (from the Latin rostrum meaning beak) is used for a number of phylogenetically unrelated structures in different groups of animals.

New!!: Shark and Rostrum (anatomy) · See more »

Sand tiger shark

The sand tiger shark (Carcharias taurus), grey nurse shark, spotted ragged-tooth shark, or blue-nurse sand tiger is a species of shark that inhabits subtropical and temperate waters worldwide.

New!!: Shark and Sand tiger shark · See more »


A sawshark or saw shark is a member of a shark order (Pristiophoriformes) bearing a unique long, saw-like rostrum (snout or bill) edged with sharp teeth, which they use to slash and disable their prey.

New!!: Shark and Sawshark · See more »

Scalloped hammerhead

The scalloped hammerhead (Sphyrna lewini) is a species of hammerhead shark, and part of the family Sphyrnidae.

New!!: Shark and Scalloped hammerhead · See more »

School shark

The school shark (Galeorhinus galeus) is a houndshark of the family Triakidae, and the only member of the genus Galeorhinus. Common names also include tope shark, snapper shark, and soupfin shark. It is found worldwide in temperate seas at depths down to about. It can grow to nearly long. It feeds both in midwater and near the seabed, and its reproduction is ovoviviparous. This shark is caught in fisheries for its flesh, its fins, and its liver, which has a very high vitamin A content. The IUCN has classified this species as "vulnerable" in its Red List of Threatened Species.

New!!: Shark and School shark · See more »

Science (journal)

Science, also widely referred to as Science Magazine, is the peer-reviewed academic journal of the American Association for the Advancement of Science (AAAS) and one of the world's top academic journals.

New!!: Shark and Science (journal) · See more »

Seafood Watch

Seafood Watch is one of the best known sustainable seafood advisory lists, and has influenced similar programs around the world.

New!!: Shark and Seafood Watch · See more »


A seamount is a mountain rising from the ocean seafloor that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock.

New!!: Shark and Seamount · See more »


Serration generally refers to a saw-like appearance or a row of sharp or tooth-like projections.

New!!: Shark and Serration · See more »


Sewage (or domestic wastewater or municipal wastewater) is a type of wastewater that is produced from a community of people.

New!!: Shark and Sewage · See more »

Sexual maturity

Sexual maturity is the capability of an organism to reproduce.

New!!: Shark and Sexual maturity · See more »

Shark Conservation Act

The Shark Conservation Act of 2010 (SCA) was passed by the 111th United States Congress that amended the High Seas Driftnet Fishing Moratorium Protection Act and the Magnuson–Stevens Fishery Conservation and Management Act to improve the conservation of sharks.

New!!: Shark and Shark Conservation Act · See more »

Shark fin soup

Shark fin soup (or shark's fin soup) is a traditional soup or stewed dish found in Chinese cuisine and Vietnamese cuisine.

New!!: Shark and Shark fin soup · See more »

Shark finning

Shark finning is the act of removing fins from sharks, often while the shark is alive.

New!!: Shark and Shark finning · See more »

Shark Finning Prohibition Act

The Shark Finning Prohibition Act was signed into law by Bill Clinton on December 21, 2000.

New!!: Shark and Shark Finning Prohibition Act · See more »

Shark meat

Shark meat is a seafood consisting of the flesh of sharks.

New!!: Shark and Shark meat · See more »

Shark threat display

Shark threat display, a type of agonistic display, is a behaviour observed in some sharks when they feel threatened or protective.

New!!: Shark and Shark threat display · See more »

Shark tooth

A shark tooth is one of the numerous teeth of a shark.

New!!: Shark and Shark tooth · See more »

Shark Trust

The Shark Trust is a charitable organization founded in the UK in 1997, and is dedicated to promoting the study, management and conservation of sharks, skates and rays (elasmobranchs) in the UK and internationally.

New!!: Shark and Shark Trust · See more »


Sharktopus is a 2010 SyFy original horror/science fiction film produced by Roger Corman, directed by Declan O'Brien, and starring Eric Roberts.

New!!: Shark and Sharktopus · See more »


Sharkwater is a 2006 Canadian documentary film written and directed by Rob Stewart.

New!!: Shark and Sharkwater · See more »

Shortfin mako shark

The shortfin mako shark (Isurus oxyrinchus), also known as the blue pointer or bonito shark, is a large mackerel shark.

New!!: Shark and Shortfin mako shark · See more »


A sieve, or sifter, is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net or metal.

New!!: Shark and Sieve · See more »

Silky shark

The silky shark (Carcharhinus falciformis), also known by numerous names such as blackspot shark, grey whaler shark, olive shark, ridgeback shark, sickle shark, sickle-shaped shark and sickle silk shark, is a species of requiem shark, in the family Carcharhinidae, named for the smooth texture of its skin.

New!!: Shark and Silky shark · See more »


The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago (Mya), to the beginning of the Devonian Period, Mya.

New!!: Shark and Silurian · See more »

Sister group

A sister group or sister taxon is a phylogenetic term denoting the closest relatives of another given unit in an evolutionary tree.

New!!: Shark and Sister group · See more »

Skate (fish)

Skates are cartilaginous fish belonging to the family Rajidae in the superorder Batoidea of rays.

New!!: Shark and Skate (fish) · See more »


The skull is a bony structure that forms the head in vertebrates.

New!!: Shark and Skull · See more »


Mustelus also known as the smooth-hounds is a genus of sharks in the family Triakidae.

New!!: Shark and Smooth-hound · See more »

South Africa

South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa.

New!!: Shark and South Africa · See more »


In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.

New!!: Shark and Spectrophotometry · See more »


Sperm is the male reproductive cell and is derived from the Greek word (σπέρμα) sperma (meaning "seed").

New!!: Shark and Sperm · See more »

Spinal cord

The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

New!!: Shark and Spinal cord · See more »

Spiny dogfish

The spiny dogfish, spurdog, mud shark, or piked dogfish (Squalus acanthias) is one of the best known species of the Squalidae (dogfish) family of sharks, which is part of the Squaliformes order.

New!!: Shark and Spiny dogfish · See more »


Spiracles are openings on the surface of some animals, which usually lead to respiratory systems.

New!!: Shark and Spiracle · See more »

Spiral valve

A spiral valve or scroll valve is the corkscrew-shaped lower portion of the intestine of some sharks, Acipenseriformes (sturgeon and paddlefish), rays, skates, bichirs, and lungfishes.

New!!: Shark and Spiral valve · See more »


Squalene is a natural 30-carbon organic compound originally obtained for commercial purposes primarily from shark liver oil (hence its name, as Squalus is a genus of sharks), although plant sources (primarily vegetable oils) are now used as well, including amaranth seed, rice bran, wheat germ, and olives.

New!!: Shark and Squalene · See more »


The Squalidae, also called dogfish sharks or spiny dogfishes, are a family of sharks in the order Squaliformes.

New!!: Shark and Squalidae · See more »


The Squaliformes are an order of sharks that includes about 126 species in seven families.

New!!: Shark and Squaliformes · See more »


Squalomorphii is a superorder of cartilaginous fishes, generally characterized by lacking traits such as an anal fin, nictitating membrane, or suborbital shelves in the cranium.

New!!: Shark and Squalomorphii · See more »


Squid are cephalopods of the two orders Myopsida and Oegopsida, which were formerly regarded as two suborders of the order Teuthida, however recent research shows Teuthida to be paraphyletic.

New!!: Shark and Squid · See more »


Statistics is a branch of mathematics dealing with the collection, analysis, interpretation, presentation, and organization of data.

New!!: Shark and Statistics · See more »

Status symbol

A status symbol is a perceived visible, external denotation of one's social position and perceived indicator of economic or social status.

New!!: Shark and Status symbol · See more »


Stereoscopy (also called stereoscopics, or stereo imaging) is a technique for creating or enhancing the illusion of depth in an image by means of stereopsis for binocular vision.

New!!: Shark and Stereoscopy · See more »

Steven Spielberg

Steven Allan Spielberg (born December 18, 1946) is an American filmmaker.

New!!: Shark and Steven Spielberg · See more »


Stingrays are a group of sea rays, which are cartilaginous fish related to sharks.

New!!: Shark and Stingray · See more »


A supermarket is a self-service shop offering a wide variety of food and household products, organized into aisles.

New!!: Shark and Supermarket · See more »

Swell shark

The swell shark (Cephaloscyllium ventriosum) is a catshark in the family Scyliorhinidae. It is found in the subtropical eastern Pacific Ocean between central California and to southern Mexico, with an additional population off the coast of Chile. As a defense, the swell shark is able to expand to approximately double its regular size by swallowing water.

New!!: Shark and Swell shark · See more »


Swordfish (Xiphias gladius), also known as broadbills in some countries, are large, highly migratory, predatory fish characterized by a long, flat bill.

New!!: Shark and Swordfish · See more »


Syfy (formerly Sci-Fi Channel and Sci Fi) is an American basic cable and satellite television channel that is owned by the NBCUniversal Cable Entertainment Group division of NBCUniversal, a subsidiary of Comcast.

New!!: Shark and Syfy · See more »


Symmoriida is an extinct order of ratfish that contains three families.

New!!: Shark and Symmoriida · See more »


The tail is the section at the rear end of an animal's body; in general, the term refers to a distinct, flexible appendage to the torso.

New!!: Shark and Tail · See more »

Tamil language

Tamil (தமிழ்) is a Dravidian language predominantly spoken by the Tamil people of India and Sri Lanka, and by the Tamil diaspora, Sri Lankan Moors, Burghers, Douglas, and Chindians.

New!!: Shark and Tamil language · See more »

Tamil Nadu

Tamil Nadu (• tamiḻ nāḍu ? literally 'The Land of Tamils' or 'Tamil Country') is one of the 29 states of India.

New!!: Shark and Tamil Nadu · See more »

Tapetum lucidum

The tapetum lucidum (Latin: "bright tapestry; coverlet", plural tapeta lucida) is a layer of tissue in the eye of many vertebrates.

New!!: Shark and Tapetum lucidum · See more »


The teleosts or Teleostei (Greek: teleios, "complete" + osteon, "bone") are by far the largest infraclass in the class Actinopterygii, the ray-finned fishes, and make up 96% of all extant species of fish.

New!!: Shark and Teleost · See more »

Telugu language

Telugu (తెలుగు) is a South-central Dravidian language native to India.

New!!: Shark and Telugu language · See more »


A tessera (plural: tesserae, diminutive tessella) is an individual tile, usually formed in the shape of a cube, used in creating a mosaic.

New!!: Shark and Tessera · See more »


The superclass Tetrapoda (from Greek: τετρα- "four" and πούς "foot") contains the four-limbed vertebrates known as tetrapods; it includes living and extinct amphibians, reptiles (including dinosaurs, and its subgroup birds) and mammals (including primates, and all hominid subgroups including humans), as well as earlier extinct groups.

New!!: Shark and Tetrapod · See more »

The Advertiser (Adelaide)

The Advertiser is a conservative, daily tabloid-format newspaper published in the city of Adelaide, South Australia.

New!!: Shark and The Advertiser (Adelaide) · See more »

The Guardian

The Guardian is a British daily newspaper.

New!!: Shark and The Guardian · See more »

The Independent

The Independent is a British online newspaper.

New!!: Shark and The Independent · See more »

The Reef (2010 film)

The Reef is a 2010 Australian horror film.

New!!: Shark and The Reef (2010 film) · See more »

The Verge

The Verge is an American technology news and media network operated by Vox Media.

New!!: Shark and The Verge · See more »


Thelodonti (from Greek: "feeble teeth")Maisey, John G., Craig Chesek, and David Miller.

New!!: Shark and Thelodonti · See more »


Thermoregulation is the ability of an organism to keep its body temperature within certain boundaries, even when the surrounding temperature is very different.

New!!: Shark and Thermoregulation · See more »


THOMAS was the first online database of United States Congress legislative information.

New!!: Shark and THOMAS · See more »

Thomas Beckington

Thomas Beckington (also spelt Beckynton; c. 1390 – 14 January 1465) was the Bishop of Bath and Wells and King's Secretary in medieval England.

New!!: Shark and Thomas Beckington · See more »

Thresher shark

Thresher sharks are large lamniform sharks of the family Alopiidae found in all temperate and tropical oceans of the world; the family contains four species, all within the genus Alopias.

New!!: Shark and Thresher shark · See more »

Tiger shark

The tiger shark (Galeocerdo cuvier) is a species of requiem shark and the only extant member of the genus Galeocerdo.

New!!: Shark and Tiger shark · See more »


Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae.

New!!: Shark and Tilefish · See more »

Tom and Jerry

Tom and Jerry is an American animated series of short films created in 1940 by William Hanna and Joseph Barbera.

New!!: Shark and Tom and Jerry · See more »


Tonicity is a measure of the effective osmotic pressure gradient, as defined by the water potential of two solutions separated by a semipermeable membrane.

New!!: Shark and Tonicity · See more »


Trimethylamine (TMA) is an organic compound with the formula N(CH3)3.

New!!: Shark and Trimethylamine · See more »

United States

The United States of America (USA), commonly known as the United States (U.S.) or America, is a federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

New!!: Shark and United States · See more »

United States Court of Appeals for the Ninth Circuit

The United States Court of Appeals for the Ninth Circuit (in case citations, 9th Cir.) is a U.S. Federal court with appellate jurisdiction over the district courts in the following districts.

New!!: Shark and United States Court of Appeals for the Ninth Circuit · See more »

United States courts of appeals

The United States courts of appeals or circuit courts are the intermediate appellate courts of the United States federal court system.

New!!: Shark and United States courts of appeals · See more »

United States v. Approximately 64,695 Pounds of Shark Fins

United States v. Approximately 64,695 Pounds of Shark Fins (520 F.3d 976) is a 2008 decision of the United States Court of Appeals for the Ninth Circuit concerning civil forfeiture in admiralty law.

New!!: Shark and United States v. Approximately 64,695 Pounds of Shark Fins · See more »

University of Texas MD Anderson Cancer Center

The University of Texas MD Anderson Cancer Center (colloquially MD Anderson) is one of the original three comprehensive cancer centers in the United States.

New!!: Shark and University of Texas MD Anderson Cancer Center · See more »


Urea, also known as carbamide, is an organic compound with chemical formula CO(NH2)2.

New!!: Shark and Urea · See more »

Ventricle (heart)

A ventricle is one of two large chambers in the heart that collect and expel blood received from an atrium towards the peripheral beds within the body and lungs.

New!!: Shark and Ventricle (heart) · See more »

Vertebral column

The vertebral column, also known as the backbone or spine, is part of the axial skeleton.

New!!: Shark and Vertebral column · See more »


Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).

New!!: Shark and Vertebrate · See more »

Victoria (Australia)

Victoria (abbreviated as Vic) is a state in south-eastern Australia.

New!!: Shark and Victoria (Australia) · See more »

Viper dogfish

The viper dogfish or viper shark (Trigonognathus kabeyai) is a rare species of dogfish shark in the family Etmopteridae, and the only extant member of its genus.

New!!: Shark and Viper dogfish · See more »


Among animals, viviparity is development of the embryo inside the body of the parent, eventually leading to live birth, as opposed to reproduction by laying eggs that complete their incubation outside the parental body.

New!!: Shark and Viviparity · See more »

Walking the plank

Walking the plank was a method of execution practiced on special occasion by pirates, mutineers, and other rogue seafarers.

New!!: Shark and Walking the plank · See more »


Warm-blooded animal species can maintain a body temperature higher than their environment.

New!!: Shark and Warm-blooded · See more »

Western Australian shark cull

The Western Australian shark cull is the common term for a former state government policy of capturing and killing large sharks in the vicinity of swimming beaches by use of baited drum lines.

New!!: Shark and Western Australian shark cull · See more »

Whale shark

The whale shark (Rhincodon typus) is a slow-moving, filter-feeding carpet shark and the largest known extant fish species.

New!!: Shark and Whale shark · See more »

Whitetip reef shark

The whitetip reef shark (Triaenodon obesus) is a species of requiem shark, in the family Carcharhinidae, and the only member of its genus.

New!!: Shark and Whitetip reef shark · See more »


Wobbegong is the common name given to the 12 species of carpet sharks in the family Orectolobidae.

New!!: Shark and Wobbegong · See more »


Xenacanthida (or Xenacanthiforms) is an order of prehistoric sharks that appeared during the Lower Carboniferous period.

New!!: Shark and Xenacanthida · See more »


Xenacanthus is a genus of prehistoric sharks.

New!!: Shark and Xenacanthus · See more »


Among animals which produce one, the yolk (also known as the vitellus) is the nutrient-bearing portion of the egg whose primary function is to supply food for the development of the embryo.

New!!: Shark and Yolk · See more »

Yucatec Maya language

Yucatec Maya (endonym: Maya; Yukatek Maya in the revised orthography of the Academia de Lenguas Mayas de Guatemala), called Màaya t'àan (lit. "Maya speech") by its speakers, is a Mayan language spoken in the Yucatán Peninsula and northern Belize.

New!!: Shark and Yucatec Maya language · See more »

Zebra shark

The zebra shark (Stegostoma fasciatum) is a species of carpet shark and the sole member of the family Stegostomatidae.

New!!: Shark and Zebra shark · See more »

Redirects here:

Evolution of sharks, Latin names of sharks, Obligate ram ventilator, Pleurotremata, Selachian, Selachians, Selachii, Selachimorph, Selachimorpha, Selachoidei, Shark behaviour, Shark senses and behaviors, Shark taxonomy, Sharkes, Sharkie, Sharks, Акула, 🦈.


[1] https://en.wikipedia.org/wiki/Shark

Hey! We are on Facebook now! »