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Tiger Sharks

Uploaded by swborder13 on Sep 12, 1999

Description of Tiger Sharks Information about Tiger sharks is rare in books so most of this paper will be about sharks in general. The Tiger Shark's Latin name is Galeocerdo cuvier. Sharks are a member of the fish family. There are over 350 species of sharks. Sharks can be as big as 49 feet long (whale shark) and as short as 6 inches (cigar shark). Sharks' bodies do not have bones, but have cartilage instead. They have pointed heads with five gills behind it. Sharks have very sharp teeth that are replaced whenever they lose teeth. Sharks' skin can be reddish brown, bronze, metallic blue or nearly black, although most of them are gray. Some have spots, bands and marbling. Their skin is leathery and covered with small pointed scales which are so sharp that if petted in the opposite direction can actually hurt your hand. Sharks have great senses. Their eyes are sensitive and can even see in dim light. Their sense of smell is outstanding. They also have senses that humans do not. Sharks can feel when other things are around them. Also, they have organs on their snouts which tell them when other fish are around. Sharks are known to eat every creature in the sea including their own kind. Some sharks eat only plants and plankton. Others prefer live food. People have found very unusual things in sharks' stomachs such as hooves of cows, horses, dogs, cats, goats and human corpses. Unlike bony fish which lay hundreds of eggs at one time, sharks litters are much smaller. Some sharks have as few as two offspring at a time. Bony fish babies are born small and puny. Shark "pups" are born fully developed and are ready to eat the foods that full-grown sharks eat. Some of sharks' behavior is interesting and understood. Other behaviors are still mysterious. For example, sharks attack when they are hungry. But why they attack when they are not hungry, we do not know. They may attack for defense, because they think humans are food, because they smell blood or because they smell or sense chemicals that are interesting to them. While people may think that all sharks are dangerous, only about 30 species are considered dangerous, including the Tiger Shark. Even when sharks do attack, the victims usually do not die anyway. Where Sharks Live Sharks are found in all of the world's oceans although most...

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Uploaded by:   swborder13

Date:   09/12/1999

Category:   Animals

Length:   3 pages (633 words)

Views:   1276

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