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| Sharks are built for speed. |
| They have cartilage,
instead of bones. That is what makes them so light and flexible. |
| Most sharks are
meat eaters. Not all them eat meat, though. Some like plankton. |
| Sharks are born
hunters. They prey on injured or weak fish or animals. |
| Sharks can see well and they are very sensitive to movement. |
| They have a great sense of smell, too. |
| Most sharks hunt alone, but the hammerhead sharks hunt in schools. |
| Of the 360 different kinds of
sharks, only 4 are truly harmful to humans. |
| Most shark attacks
are a result of instinctive feeding behavior and a case of mistaken prey. |
| Sharks are more
endangered by man, than man is of them. In 1999, 58 people were
attacked worldwide by sharks. In 2000, 79 were attacked, but 50 million sharks are killed annually. |
| For many sharks it takes over 40 years to reproduce. |
| Most sharks are born alive, but some are hatched from eggcases. |
| Remora fish attach
themselves to sharks and ride along with them. They eat the parasites that are on the shark. |
| It has just been
discovered that some sharks sleep for short periods of time. |
| Some sharks have electrical sensors,
which allows them to find their prey under the sand in the ocean. |
| Shark gills remove the oxygen from the water. |
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