Wildlife sighting

Blue Dragon Sea Slug

Glaucus atlanticus

Spotted a Blue Dragon Sea Slug!

Spotted by: samuel.jones
Date: October 4, 2025
Near: Harris County, Texas

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About the Blue Dragon Sea Slug

A tiny, striking blue-and-silver sea slug that floats upside down on the ocean surface. It eats venomous Portuguese man-of-war and stores their stinging cells for its own defense.

Blue Dragon Sea Slug facts and more photos

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