They use their voices for talking to each other — and probably not for echolocating, like dolphins do.

它们用声音来彼此说话——可能不像海豚那样进行回声定位。

Light doesn't travel well underwater. So dolphins and other toothed whales navigate like bats, using echolocating clicks.

光在水中会衰减。所以海豚和其他齿鲸类动物在水中用回声定位，就像蝙蝠一样。

It’s similar to how echolocating bats will use high frequency sound to zero in on their prey.

这类似于回声定位蝙蝠如何使用高频声音将其猎物归零。