Scientists have uncovered why big predators like sharks spend so much time in the ocean’s twilight zone. The answer lies with ...

The fish was found at 200 to 2,000 meters below the surface. At least 16 types of recently discovered deep-sea fish are among the darkest creatures ever found, according to a study published Thursday.

These three fish are freaks, phantoms and mysteries of the deep. Here’s what we’ve learned from the rare glimpses we’ve had of their lives. The deep sea is one of Earth’s final frontiers. Given its ...

There’s a reason why the idea of aliens living at the bottom of the sea keeps popping up in popular culture. Many of us are far more afraid of what lies down there than whatever is looking at us from ...

Mesopelagic fish, long overlooked in ocean chemistry, are now proven to excrete carbonate minerals much like their shallow-water counterparts—despite living in dark, high-pressure depths. Using the ...

A new glass sponge species is so strange that has been given the name named Advhena magnifica, which means "magnificent alien ...

New research sheds light on the overlooked contribution of the ocean’s most abundant fish to marine carbon cycling. The findings open new avenues for studying deep-sea carbon dynamics and may improve ...