独角鲸

例句：

1. 1. The whale is the largest animal in the ocean.
   鲸是海洋中最大的动物。
2. 2. The narwhal is a unique species that can live for over 30 years.
   抹香鲸是一种独特的物种，可以活超过30年。
3. 3. The whale's intelligence and social behavior are fascinating to study.
   鲸的智能和社会行为令人着迷。