Sperm whales dive into the midnight zone, using echolocation to track giant squid, returning scarred breathing hard, alive at ...

During a dive off Argentina, scientists documented a rare jellyfish discovered a little over a century ago and seldom seen since, as well as the fish that keep it company.

Researchers studying deep-sea processes off Hainan Island made an unexpected discovery. Pacific sleeper sharks swam from cold, northern waters into the tropical South China Sea. The rare sighting has ...

In Earth’s deepest waters, survival depends on aggression, stealth, and biology built for killing in darkness. This video ...

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 ...

Scientists filmed a squid covering itself in mud and holding its tentacles upright, using camouflage that helps it hide on the ocean floor.

Beneath the ocean's surface lies a world of perpetual darkness, home to some of Earth's most bizarre and fascinating creatures. These deep-sea inhabitants have evolved extraordinary adaptations to ...

The ocean is full of surprises, and scientists are still finding creatures that seem almost unreal. From tiny reef animals to bizarre deep-sea species, these discoveries show just how much of the ...

Trawlers off Taiwan caught a deep-sea predator with “very large” eyes and discovered a new species, a study said. Getty Images/iStockphoto Around an island off mainland Taiwan, shrimp trawlers hauled ...