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

At the bottom of the world’s trenches, there’s a fish that shouldn’t exist. Here’s how it earned the title of the ...

Cruising at a depth of 8,336 meters (over 27,000 feet) just above the seabed, a young snailfish has become the deepest fish ever filmed by scientists during a probe into the abyss of the northern ...

Deep-sea fish adapt to some of the most extreme conditions on Earth. New research analyzing their evolution finds the same mutation across fish species that have evolved on separate timelines — ...

For decades, oceanographers have known that something did not add up in the deep sea. Huge predators like sharks and tunas ...

Researchers descended more than 35,700 feet (10,900 meters) below sea level to collect biological samples that revealed surprising diversity. And also trash. Reading time 3 minutes Earth’s hadal zone ...

Thousands of never-before-seen microbe species have been found in the deepest point of the world's oceans, the Mariana Trench. These strange microorganisms are like nothing we see on the surface, ...

Chilean devil rays swim in the Atlantic Ocean near the Azores. Reinhard Dirscherl / ullstein bild via Getty Images There’s only one word for it: indescribable. “It’s one of those awesome experiences ...

A new study offers the first direct evidence that deep-dwelling mesopelagic fish, which account for up to 94% of global fish biomass, excrete carbonate minerals at rates comparable to shallow-water ...