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.

They wrap around them — with 30-foot-long arms. Deep sea researchers aboard the Schmidt Ocean Institute’s sprawling vessel captured rare footage of a giant phantom jelly in Costa Rican waters.

David Attenborough’s 'Ocean' is a brutal, beautiful wake-up call from the sea The new film “Ocean With David Attenborough” is both a breathtaking celebration of marine life and a sobering ...