Shark and Tiger shark

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Difference between Shark and Tiger shark

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

Ampullae of Lorenzini

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

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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.

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Aumakua

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

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Australia

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.

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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.

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Batoidea

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

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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.

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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.

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Carcharhiniformes

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

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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.

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Catshark

Catsharks are ground sharks of the family Scyliorhinidae.

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Clasper

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

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Cloaca

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.

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Crustacean

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

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Fish

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

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Fish fin

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

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Gill

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

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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.

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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.

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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.

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India

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

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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.

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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.

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Japan

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.

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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.

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Lemon shark

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

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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.

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List of sharks

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

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Marine mammal

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

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Megamouth shark

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

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Mollusca

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.

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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.

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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.

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Olfaction

Olfaction is a chemoreception that forms the sense of smell.

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Ovoviviparity

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.

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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.

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Retina

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

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Shark finning

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

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Sperm

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

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Squid

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.

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Tapetum lucidum

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

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Teleost

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.

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Whale shark

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

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