The marine photographer who captured the footage said it could be the world's first recorded sighting of a black seadevil ...

Dark oxygen produced on the floor of the ocean is challenging our understanding of how life may have started and where it may be possible elsewhere... Bubbles of oxygen are seen against a dark ...

One woman wished she could hold her breath "forever" when she came across a huge number of sea creatures during a recent snorkeling experience.

But it is widely believed that Earth’s ancient ocean was much more acidic, making it harder to sustain life. Many scientists have found that the synthesis of organic molecules is extremely difficult ...

The ocean seethes with them ... 10 percent to 20 percent—of the atmosphere’s oxygen. That means that life on Earth depends on the roughly 3 octillion (or 3 × 10 27) tiny individual cells ...