Black-margined Nudibranch

Doriprismatica atromarginata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Chromodorididae. Description Doriprismatica atromarginata ranges in colour from creamy-white through yellow to pale brown. It typically has a black-lined edge running down the outside of a very... Read more in Seabook