Ringed Phyllidiella

Phyllidiella annulata is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae. Description Phyllidiella annulata can reach a length of 30-37 mm. It shows a distinctive dorsal pattern usually consisting of a black background with various rings of small greyish pink tu... Read more in Seabook