Nudibranch

Description

Found throughout the Indo-West Pacific, from the Red Sea to the central Pacific, this nudibranch belongs to a group of sea gastropod molluscs that are soft-bodied and shell-less marine sea slugs. Its blue-grey ridges are studded with yellow-capped bumps. Like other phyllidiids, it stores noxious chemicals from the sponges it eats in glands in its skin, which protect it from hungry fish; its mucus can kill fish and crustaceans kept with it in an aquarium.