It's middle ground between shallower waters and the deep ocean floor, but still has enough light for coral to grow and reproduce.

其位于较浅水域和深海海底之间的中间地带，但是有足够的光线使珊瑚得以长和繁殖。

Among the photos it captured were unmistakable images of a wrecked sub on the deep ocean floor.

摄的照片中， 有一张清晰无误的深海海底残骸图像。

Another important idea which is the one that I would subscribe to is down at the bottom of the oceans in deep-sea hydrothermal vents where you've got this continuous flow.

另一个我赞同的重要观点是海底的深海热液喷口那里有持续的水流。