Scattered across an abyssal plain known as the Clarion-Clipperton Zone (CCZ) are polymetallic nodules that are a potato-sized ...

It’s easy to forget that beneath the sunlit waves, just past where the ocean’s blue turns to jet-black, lies a world teeming ...

Photo Credit: NASA Oxygen-starved ocean “dead zones,” where fish and animals cannot survive, have been expanding in the open ocean and coastal waters for several decades as a result of human ...

Imagine descending into the ocean’s deep, dark twilight zone, a realm straight out of science fiction. Here, in a place where ...

Scientists have revealed footage of a colossal squid swimming in the deep ocean. It's the first time we've seen one alive in ...

MIT oceanographers discovered big fish like tuna and swordfish get a large fraction of their food from the ocean’s twilight zone — a cold, dark layer about half a mile below the surface.

In a groundbreaking discovery, scientists have identified a phenomenon they're calling "dark oxygen" — oxygen produced without any sunlight — 4,000 meters beneath the Pacific Ocean in the ...

Dark oxygen ... of the ocean bottom itself suggests one possible source: polymetallic nodules. These potato-sized lumps, composed of various metals, litter the seafloor where the researchers detected ...