There's a lot of animals in the open ocean - most of them that make light. And we have a pretty good idea, for most of them, why. They use it for finding food, for attracting mates, for defending against predators. But when you get down to the bottom of the ocean, that's where things get really strange.
在公海中有很多动物-其中大多数会发光. 对于大多数人，我们有一个很好的主意，为什么. 他们用它来寻找食物，吸引伴侣，防御天敌. 但是，当您跌入海底时，事情就会变得很奇怪.