Plunging into the crystalline waters of the Galápagos Islands, scuba divers swam along a coral reef and watched its ever-shifting marine life. Amid the hubbub, several unfamiliar sea creatures caught ...

Marvel at the beauty of the stonefish family as they perfectly disguise themselves into the ocean floor before moving on.

A shimmery deep-sea creature measuring almost 5 feet mysteriously washed ashore on an Oregon beach. Now, researchers get a ...

In haunting footage captured about 1,604 feet (489 meters) under the sea, cameras captured the tubular crustaceans latched onto the fish’s back. Though the parasites’ presence might trigger your gag ...

An outbreak of domoic acid poisoning caused by an algae bloom has sickened and killed dolphins, sea birds, sea lions and even ...

Sea creatures keep showing up dead in California ... officials said. Small fish and sardines can create domoic acid, and test results showed both the humpback and mink whales had high levels ...

Deep-sea mining could unleash clouds of debris that threaten a mysterious, vital ecosystem we barely understand.