They live on the ocean floor.

生活在海底。

And much about the ocean floor is unknown.

但海底仍然深未可知。

Could humans build neighborhoods and cityscapes on the ocean floor?

那人类能在海底打造社区、建设城市吗?

The destruction of old ocean floor happens in 'subduction zones.'

旧海底的破坏发生在“俯冲带”。

She sits on the ocean floor.

她坐在海底。

Underneath kilometers of seawater, the ocean floor is full of riches.

在数公里的海水之下，海底充满了财富。

One mile down, on the ocean floor, they look like this.

在一英里以下的海床上，它们看起来就是这样的。

The young flatback turtle searches for food on the ocean floor.

年幼的平背海龟在海底搜寻着食物。

Coral reefs cover less than 1 percent of the ocean floor.

珊瑚礁覆盖面积不足海底的1%。

So how much time does that give you on the ocean's floor?

那你在海底有多少时间？