There are tons of terrifying creatures lurking in the dark, cold, pressurized environment of the deep sea, from a ginormous relative of the garden pill bug, to fish with translucent heads.

The curious minds at What If explore the scariest things in the ocean that you didn't know existed.

Centuries before modern science could more accurately explain the natural world, brief animal sightings often inspired ...

Known as Dalhousiella yabukii, the worm resides inside a glass sea sponge—a simple marine animal that forms a glass-like skeleton—in the cold, dark waters off the coast of Japan. And it’s just one of ...

New research shows why some shelly critters flourished in the ocean’s harshest habitats — and others didn’t Jack Tamisiea Beds of Bathymodiolus mussels provide important habitat for other deep-sea ...

Over 70% of Earth's surface is covered by oceans, but most of it remains unexplored. In contrast, we have detailed surface maps of Mars created by orbiting satellites. The vast world beneath the waves ...

This is the terrifying moment student divers came face-to-face with an extremely rare deep-water shark off California. Murky footage showed the prickly shark suddenly appear out of the darkness during ...

Get your news from a source that’s not owned and controlled by oligarchs. Sign up for the free Mother Jones Daily. Beneath the neon lights of a laser-scanning microscope, newly classified species glow ...

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 ...