High-definition pictures of a World War I-era U.S. Navy submarine that sank to the bottom of the ocean near San Diego were just released, over a century after it was lost at sea.

A part of the Pacific Ocean earmarked for deep-sea mining is home to a surprising variety of life, images from a recent voyage to the Clarion-Clipperton Zone show. CNN values your feedback 1.

New images of deep sea wonders are surprisingly adorable. A very rare squid, the ‘Casper’ octopus, two ‘flying spaghetti monsters’, and more were also documented on this expedition.

Vintage photos show how deep sea diving and exploration has evolved over the years. By James Pasley. A diver gets ready to search for treasure in Tobermory Bay in 1954. Bettmann/Getty ...

The deep sea is our planet's most mysterious environment, where strange creatures lurk like something straight out of Jaws.. Now, a new study published Wednesday in the journal PLOS ONE sheds some ...

Deep in the ocean lives a ghoulish fish with huge and menacing, fang-like teeth. The aptly named common fangtooth fish (Anoplogaster cornuta)—sometimes referred to by its nickname "ogrefish ...

An expedition spotted a baby of the species in the South Sandwich Islands. This cephalopod can grow to more than 20 feet and has proved elusive in its deep-sea environs.

High-definition pictures of a World War I-era U.S. Navy submarine that sank to the bottom of the ocean near San Diego were just released, over a century after it was lost at sea.

A part of the Pacific Ocean earmarked for deep-sea mining is home to a surprising variety of life, images from a recent voyage to the Clarion-Clipperton Zone show.