在英语中，"鲨鱼"的说法是"shark". 这个词的来源是古英语"scearm"，最初指的是鳐鱼。

例句：

I saw a shark while I was swimming in the ocean.
我在海里游泳的时候看到了一条鲨鱼。

Sharks are known for their sharp teeth and powerful jaws.
鲨鱼以其锋利的牙齿和强有力的下颌而闻名。

Shark populations have been decpning in recent years due to overfishing and habitat destruction.
近年来，由于过度捕捞和栖息地破坏，鲨鱼的数量一直在下降。