The hunter endlessly waiting. 猎人,还在无尽的等待着

51. but rainbow runners are swift and agile and not easily caught
    但是香蕉鱼游的敏捷迅速,白鳍鲨不容易捉到
52. so, it bides it's time.
    因此鲨鱼耐心等候
53. There's a chance that, eventually, it may spot a weakened fish that's catchable.
    可能到最后可以找到一条 容易抓到的老弱的鱼
54. The hunter endlessly waiting.
    猎人,还在无尽的等待着
55. Excitement far from land.
    即使远离陆地也有刺激的事情
56. school of dolphin five hundred strong.
    一群多达500条的真海豚
57. A They've sensed there's food around,
    它们感觉到附近有食物

来自《行星地球 第一季 第十一集 Planet Earth S01E11 海洋深处》第 54 行