The ocean is home to some of the creepiest animals out there. It feels like the deeper you go in the water, the stranger and ...

Megalodon usually gets all the attention when it comes to sea monsters, but ancient oceans were full of predators just as ...

Deep inside the world’s longest cave system, scientists have uncovered two terrifying extinct predators that once prowled a ...

In July and August scientists onboard the Schmidt Ocean Institute’s research vessel Falkor (too) spotted the oddities through the eyes of an underwater robot as they explored the Mar del Plata Canyon.

This jaw-dropping shark is pink, nightmarishly ugly and can slingshot its jaw out of its face when it’s hungry ...

The deep sea is famous for strange and terrifying creatures, but some rivers may be even more dangerous. Freshwater systems can pack extreme predators, aggressive competition, and parasites that ...

Japanese scientists confirm a new marine coral species, Corallizoanthus aureus, that glows in the dark and inhabits deep caves in the ocean.

Thousands of meters below the ocean's surface lurk some gigantic creatures, much larger than their shallow-water brethren. Scientists have a few hunches for why this happens, but the debate continues.

Marine researchers exploring extreme depths say they have discovered an astonishing deep-sea ecosystem of chemosynthetic life that’s fueled by gases escaping from fractures in the ocean bed. The ...