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.

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

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

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 ...

by Tokai University March 18, 2025. Blue sea slugs were believed to prey on the Portuguese man-of-war, which contains highly poisonous nematocysts, and uses the nematocysts for defense by ...

The sea slugs are best admired from afar as their stings can result in acute allergic contact dermatitis as well as post-inflammatory hyperpigmentation along with nausea, vomiting, and intense pain.

The blue sea dragon, a type of venomous sea slug that lives in the open ocean, has recently been spotted at Cape Hatteras National Seashore. Skip to content. All Sections. Subscribe Now.

The Cape Hatteras National Seashore posted on Facebook that Blue Sea Dragons (Glaucus atlanticus) have been spotted on the beaches. "This venomous sea slug lives in the open ocean and occasionally ...

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.