Blue Dragon Nudibranch
Alternative names: Glaucus atlanticus, sea swallow, blue glaucus, dragon slug, blue sea slug, blue ocean slug
The blue dragon is a pelagic aeolid nudibranch recorded in European waters, off the east coast of Australia, off the east and south coasts of South Africa, and Mozambique. They grow to about 3cm in length and have a flat body with six appendages that branch out into rayed cerata. blue dragon nudibranchs feed on other pelagic animals such as Portuguese man o' war.