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The Shark Research Paper

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Shark facts characteristics and behavior all sharks live in oceans. However very few species can survive in freshwater but for only for a short period. About 450 shark species have been identified so far. Sharks are cold-blooded fish that have muscular streamlined bodies with skeletons, which are made up of cartilage like other fish. Sharks have gills to breathe but the gills are not covered and can be easily seen as gill slits. There are about 5 to 7 gill slits on each side of their throat. But like bony fish, sharks do not have scales instead they have denticles which make their skin very rough. The size of the Sharks varies widely. The largest shark is the whale shark while the smallest shark is spiny dogfish shark. Sharks lack

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