A major new study shows long-term ocean warming is steadily reducing fish populations, putting global food security at risk.

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 ...

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 ...

Scientists have uncovered why big predators like sharks spend so much time in the ocean’s twilight zone. The answer lies with mid-sized fish such as the bigscale pomfret, which live deep during the ...

By Will Dunham WASHINGTON, Feb 18 (Reuters) - For more than a century, biology textbooks have stated that vision among vertebrates - people included - is built from two clearly defined cell types: ...

A strange, big-eyed "dragonfish" hidden under Antarctic ice for 780,000 years has finally been discovered - and it's already at risk.