When we dream of landscapes, we might imagine rolling valleys or rugged mountains. But there is a whole landscape hidden from human view: the secret world of the seafloor.

Researchers from the University of Delaware’s College of Earth, Ocean and Environment helped lead the charge of underwater ...

The deep sea is a dark, cold place. It's just a few degrees above freezing, subject to immense pressure, and beyond the reach ...

We have visually explored less than 0.001 percent of the deep sea floor. To put that in perspective, 66 percent of the planet is deep ocean, and 99.999 percent of that ocean is unknown to us. Like ...

Drilling for minerals deep in the ocean could have immense consequences for the tiny animals at the core of the vast marine food web — and ultimately affect fisheries and the food we find on our ...

Governments face pressure to delay seabed mining as legal risks, fragile ecosystems and global treaty commitments collide.

A photographer captured this extraordinary site where whales' bodies lie in the shallows, with troubling repercussions for the deep oceans.

Meet the “ghost fish,” a phantom of the abyss. Here’s how we found the first ever proof of its existence just a few years ago. The deep sea is a part of the world that very few humans get the chance ...

A cnidarian is attached to a dead sponge stalk on a manganese nodule in the Clarion-Clipperton Zone. Diva Amon and Craig Smith, University of Hawaii at Mānoa Picture an ocean world so deep and dark it ...

The deep ocean is about as mysterious as the depths of outer space, and it's home to some bizarre finds, from tiny angelic creatures to giant worms.

Deep-sea mining targets mineral deposits on the ocean floor, typically at depths of 3,000–6,000 meters. Most attention focuses on polymetallic nodules—potato-sized rocks lying on abyssal plains—and on ...