Off the coast of Costa Rica, fishermen came face to face with something the ocean had never shown before. A nurse shark, ...

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

In hydrothermal vent fields, a small snail evolved an iron-reinforced shell. Here’s how it challenges assumptions about ...

In Earth’s deepest waters, survival depends on aggression, stealth, and biology built for killing in darkness. This video counts down nine of the creepiest deep sea creatures, revealing how their ...

Scientists on a research vessel off the California coast are marveling at a rare find — a waved albatross was spotted soaring ...

Aerial drones also revealed the structure of the hunt: dolphins spread out in a scouting line, driving fish toward the ...

Whether it’s seaweed cloaks or see-through wings, these animals know how to hide. Meet four masters of disguise who’ve turned camouflage and mimicry into a work of art.

Cuttlefish attract prospective sexual partners by creating a pattern on their skin, based on the orientation of light waves.

The ocean is full of surprises, and scientists are still finding creatures that seem almost unreal. From tiny reef animals to ...

Some animals produce their own light, no special effects involved. In certain cases, it helps them hunt or avoid predators.

Of all the schemes that humans have devised to keep sea lions from gorging on the salmon of the Columbia River basin, none has worked for long. Local officials and researchers have chased sea lions ...