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sharks
Sharks Sharks are one of the most feared carnivores in the sea. There are 365 species of of sharks in the sea as we know today. All sharks are carnivores. Most of them eat live fish, including other sharks. A shark's most common natural enemy is an another shark. Most sharks eat their prey whole, or they tear off large chunks of the bodies. Some sharks crush their prey. Others take out small pieces off flesh from large fish. Sharks also feed on dead or dying animals. Sharks have the reputation of attacking human beings.... [tags: Papers] 1044 words
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Sharks - Sharks Although sharks belong to the class Chondrichtyes, there are many different types. Sharks arose about 350 million years ago and have remained virtually unchanged for the past 70 million years and still comprise a dominant group. It is thought that sharks almost certainly evolved from placoderms, a group of primitive jawed fishes. It took a long series of successful and unsuccessful mutations with fin, jaw positions etc to give us all the different designs of sharks around today. When asked to draw a shark, most people would draw a shape along the lines of the whaler shark family, tigers or a mackeral shark such as a porbeagle.... [tags: Papers] 2601 words
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Sharks - SHARKS There are more that 250 species of sharks, ranging from the harmless whale shark to the ferocious great white. I will describe the feeding habits and localities of the three greatly known to mankind: the great white shark (Carcharodon Carcharias), the tiger shark (Galeocerdo Cuvieri), and the bull shark (Carcharhinus Leucas). The great white shark, known as Carchardon Carcharias, feeds regularly on marine mammals, such as seals, sea lions, otters, dolphins, and whales. Samuel Gruber in Discovering Sharks writes that the great white consumes marine mammals when they come across a deceased one.... [tags: essays research papers fc]
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