The ancient Romans kept eels as pets. And the Greek philosopher Aristotle made what is believed to be the first known study of sea life, including sharks and dolphins.

古罗马人养鳗鱼，而希腊哲学家亚里斯多德被认为是第一个研究海洋生物(包括鲨鱼和海豚)的人。

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And the Greek philosopher Aristotle made what is believed to be the first known study of sea life, including sharks and dolphins.

古希腊哲学家亚里士多德关于海洋生物的研究被认为是目前已知的首次研究，他的研究对象包括了鲨鱼和海豚。

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But destructive fishing pressure has sharply depleted ocean wildlife, some by 90 percent in 50 years, including sharks, tunas, marlin, menhaden, groupers, snappers, tarpon, turtles, shrimp, crabs and others.

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The fish cages stir occasional controversy, especially because they attract sharks, including feared white pointers up to 16 feet long.

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There is the best land based whale watching anywhere, and plenty of opportunities to get out on the water, including diving with Great White sharks, something people come from all around the world to do and can easily be done as a day activity in Cape Town (though cage diving remains controversial).

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