Blue Glaucus

Glaucus atlanticus is a species of small, blue sea slug, a pelagic aeolid nudibranch, a shell-less gastropod mollusk in the family Glaucidae. These sea slugs are pelagic; they float upside down by using the surface tension of the water to stay up, where they are carried along by the winds and ocean currents.

Scientific name: Glaucus atlanticus

Higher classification: Glaucus

Rank: Species

Family: Glaucidae

Kingdom: Animalia

Order: Nudibranchia

Phylum: Mollusca