By now nearly everyone has seen or heard the story of a killer Great White Shark in Jaws, a hit novel turned into a blockbuster movie.

到现在几乎每个人都看过或听过“大白鲨”这部由畅销小说改编的卖座电影中那头吃人大白鲨的故事。

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But the researchers were surprised to find that a shark less than three meters long only looks like it could manage that killer bite.

但研究人员惊奇地发现，小于3米长的鲨鱼仅是外表看起来杀气腾腾。

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As well as killer whales, several species of shark have been recorded in the coastal waters, including the enormous basking shark, according to the Pembrokeshire National Park Authority.

BBC: NEWS | UK | Wales | South West Wales | Killer whales surprise twitchers