- another group of animals were undergoing their own radical change.
另一群动物正在经历巨变 - Beneath the surface,
在水面下方 - vertebrates had continued to evolve...
脊椎动物继续进化 - and a new type of fish was thriving,
一种新型鱼类蓬勃发展 - the lobe-finned fish.
叶鳍鱼 - Some grew to be monstrous predators.
有一些长成了巨大而可怕的捕食者 - In this fish-eat-fish world,
在这个鱼吃鱼的世界