Researchers at MBARI, the Monterey Bay Aquarium Research Institute, have been exploring this hidden world for years. Using ...

Glittery sea worms and sea squirts fit for "The Lord of the Rings" universe might sound like pure fantasy, but they're very real creatures living in the deep sea. Some of these otherworldly ocean ...

The ocean is still one of the biggest mysteries on Earth, and the deeper you go, the stranger it gets. Far below the surface, ...

Explore the darkest corners of the abyss with 18 terrifying creatures found at the bottom of the ocean. These are Earth's ...

Reaching over 30 feet long, the mysterious giant oarfish is the real-life "sea serpent" behind centuries of myths and legends ...

From bone-eating snot-flowers to snowboarding scale worms, when a whale dies it becomes a colossal island of nutrients – attracting weird and wonderful creatures to feast.

Deep sea expedition off Caribbean islands captured images of unique corals sponges fish species never before documented ...

"We know the surface of Mars or the Moon better than we know the surface of our own planet." Researchers discover never-before-seen creatures in underwater mountain range: 'We still don't know what it ...

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.

A mysterious deep-sea squid filmed 4.1 km below the Pacific can disguise itself as the ocean floor, raising new questions about hidden marine life and what we still don’t know.

Deep down in the sea, where no light penetrates and where the availability of food is very low, life somehow exists in ways that can be considered strange or unexpected. Among the most intriguing ...