Sharks
Have you seen Jaws, the famous film about the Great White Shark? For an hour and twenty minutes of the film the shark isn’t seen except for bits and pieces and shadows underwater. But when it suddenly appears above the water for the first time, even grown-up people scream and those who have a poor heart reach for their nitroglycerine pills.
Sharks are probably the most feared of all sea animals. There are more than 350 kinds of sharks in the waters of the world. But, scientists say, only 30 species are dangerous to man. Of these 30 five species are known as especially voracious man-eaters: the Great White, the Tiger Shark, the Hammerhead, the Bull Shark, and the Whitetip Shark.
Though shark attacks are rare, they are always sudden, deadly and dramatic. Sharks live in oceans throughout the world but are usually found in warm seas. Some species, however, prefer fresh water and can be met in rivers and lakes.
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