What's at the bottom of the Mariana Trench, and how do we know? How deep does the ocean go? We'll answer these questions and more in this deep dive into the world's oceans. Come on in: The water's ...

In the deep ocean, thousands of feet below the surface, it looks like it's snowing. At those depths, the water is filled with slowly drifting particles known as "marine snow," part of a never-ending ...

Sinking clumps of dead ocean life have been shown to leak up to half their carbon and more than half their nitrogen when exposed to the crushing pressure of the deep sea.