The deep sea is cold, dark and under immense pressure. Yet life has found a way to prevail there, in the form of some of Earth’s strangest creatures. Since deep-sea critters have adapted to near ...

A team of scientists has revealed a previously unknown type of visual cell in deep-sea fish larvae, an unexpected finding that reshapes more than 150 years of scientific thinking about vertebrate ...

Scientists discovered a new type of fish near the Maldives. The rainbow-colored fish was discovered in the ocean's "twilight zone," which is hundreds of feet below the surface. The fish was given the ...

Some deep-sea fish may be able to see light in a different way from most other vertebrates, according to a new study. The ...

Two species of small, deep-dwelling fish called pearlsides possess eye cells that break the rules of vertebrate vision, combining features of rods and cones into a single hybrid photoreceptor never ...

The sun shimmers across the glassy surface of Blue Hole, a heart-shaped underwater sinkhole, as two divers prepare to descend into its treacherous, turquoise abyss. Entering the twilight zone “feels ...

: [POST-BROADCAST CORRECTION Aug. 4, 2025: A previous version of this report incorrectly said that there are phytoplankton in the upper layer of the atmosphere. Phytoplankton live in the upper layer ...

Deep-sea mining is threatening vital marine life in the ocean’s “twilight zone,” reveals new research. The findings raise "urgent concerns" about long-lasting effects if large-scale commercial mining ...