dolphin

The tourists were delighted to see a pod of dolphins jumping in the wake of their boat.

(Chinese) 游客们很高兴看到一群海豚在船后的尾浪中跳跃。

Dolphins use high-frequency clicks and whistles to communicate and navigate underwater.

(Chinese) 海豚利用高频咔嗒声和哨声在水下进行交流和导航。