The maxim "There are plenty more fish in the sea" would be even less of a comfort to a man who knows that he might not set eyes on another single woman for months.

“天涯何处无芳草”，对那些知道自己几个月都见不到其他女人的男人来说，可能只是一个安慰。

youdao

Shark is the only fish in the sea that has no pneumatocyst, which means that it will swim to the bottom or even die if stopping swimming for a little while.

没有气囊的鱼，只要停止游泳一小会儿，它就会沉下去甚至会死掉。

youdao

"Even scientists sometimes find it difficult to count the number of fish in the sea, " he said.

BBC: EU agrees to new fish dumping laws