There are plenty of stories of cetaceans saving humans .
鲸类动物救人的故事有很多。
Roughly speaking , these animals filled the ecological niches now occupied by toothed cetaceans such as dolphins and killer whales .
大致上讲，这些动物填补了由现代齿鲸目动物海豚和虎鲸所占据的生态龛位。
Cetaceans are not created to decorate the immense chaotic oceans or to offer poets or littrateurs aspirations or inspirations . Nor does falconry soar towards the empyrean and scud in the firmament to demonstrate his almightiness .
