Scientists discover underwater mountain ranges, golden towers of coral, and never-before-seen sea creatures.

Blue dragons, blue buttons and Portuguese man o'war are washing up in Galveston, Surfside and other Texas beach towns during spring break, an A&M expert said.

Tiny blue dragon sea slugs are washing up along Texas beaches as spring winds push marine life ashore. Experts warn the ...

Hordes of bright blue, jellyfish-like sea creatures are washing up on beaches across California. As of Monday, thousands of the critters — called velella velella or by-the-wind sailors — have been ...

Add Yahoo as a preferred source to see more of our stories on Google. A rare ocean creature known as the “blue dragon” is showing up on Texas beaches. It may look stunning, but experts say getting too ...

Thousands of electric blue, jellyfish-like sea creatures washed up on Central Coast beaches this week. Known by the nickname of by-the-wind sailors, velella velella are hydrozoans — a species related ...

Rare blue dragon sea slugs are washing up on Texas beaches. Researchers warn the tiny creatures may be beautiful, but they can deliver a powerful sting.

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Blue blood may look alien, but it’s one of evolution’s most ...

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.