Invisible clouds of sediment created by underwater mining spread for miles, putting ocean floor ecosystems at risk.

Deep below the surface of the ocean, bacteria and critters that feed off nutrients spouting from hydrothermal vents met with a sudden wave of volcanic sediment, leaving them suffocated. Subscribe to ...

Add Yahoo as a preferred source to see more of our stories on Google. Could something be creating oxygen in the total darkness at the bottom of the ocean? (Handout) (Handout/National Oceanography ...

Researchers have unveiled two world-first deep-ocean landers designed to probe the origins of dark ...

Marine scientists who made headlines last year with their discovery that deep sea nodules could be producing “dark oxygen” are embarking on a three-year research project to explain their findings.

Could lumpy metallic rocks in the deepest, darkest reaches of the ocean be making oxygen in the absence of sunlight? Some scientists think so, but others have challenged the claim that so-called "dark ...

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

A team of scientists announced Tuesday they have developed new deep-sea landers specifically to test their contentious discovery that metallic rocks at the bottom of the ocean are producing "dark ...