This nurse shark is unusually active for the daytime.

这只护士鲨在白天这么活跃实属罕见。

And we're not talking about those friendly nurse sharks or whale sharks, these are great whites.

这些鲨鱼可不是友好的铰口鲨或者鲸鲨，它们可是真正的大白鲨。

You'll see a lot of nurse sharks, zebra sharks, some reef sharks and sand tiger sharks.

我们可以看到很多护士鲨、斑马鲨、礁鲨及虎鲨。

Nurse sharks are slow-moving bottom-dwellers, and, for the most part, harmless to humans although they can grow up to 14 feet, more than 4 meters, in length.

护士鲨是行动迟缓的底栖类动物，大多数时候对人类都是无害的，即使它们体型可达14英尺或超过4米。

Usually a nurse shark will hide under ledges or in crevices of the reef, and come out at night to eat dormant fish that are hiding in the coral.

通常护士鲨会藏在礁檐下方或是缝隙中，并在夜间出来，去捕食藏在珊瑚中熟睡的鱼。