Blue dragons have a sting up to five times stronger than the man o'war. Known officially as Glaucus atlanticus , blue dragon sea slugs are also known as sea swallows or blue angels.

A renowned marine biologist claims to have made a spectacular discovery off the coast of Mallorca: She reports having seen ...

The Elysia sea slug can shed its body and regrow it from the head down. Learn how this marine marvel cheats death.

He did not know it was in fact a blue dragon sea slug, which can be lethal and caused havoc when they washed up on beaches in Sydney in February. “Dude, you’re done. Literally,” one person ...

Why it's awesome: This tiny sea creature, which grows up to 1.2 inches (3 centimeters) long, is a type of nudibranch, or sea slug. Also known as a sea swallow or blue angel, it has three sets of ...

Blue Ocean Slugs, or glaucus atlanticus, are small sea slugs that live in the ocean and look like bizarre alien sea creatures when they wash up on Australian shores.

A San Antonio resident on a beach vacation captured a video of a bright blue sea slug on Mustang Island, Texas. The tiny creature has a powerful sting, something the vacationer didn’t know when ...

MELBOURNE, Fla. — Several blue dragon sea slugs were spotted on the beach near Cape Canaveral last weekend, and the evil-looking creatures with their menacing tendril-like digits were credited ...

Blue dragons have a sting up to five times stronger than the man o'war. Known officially as Glaucus atlanticus , blue dragon sea slugs are also known as sea swallows or blue angels.