Acanthodorididae
Acanthodorididae is a family of sea slugs, dorid nudibranchs, shell-less marine gastropod mollusks in the superfamily Onchidoridoidea.
Characteristics
The body is depressed and oval. The dorsal surface is covered with a villous or papillose texture. The rhinophores are retractile into a lobed cavity. The head is large and veliform, bearing short, lobiform tentacles. The gill apparatus is composed of tripinnate leaflets arranged in a circular pattern.The labial armature is composed of small hooks. The radula lacks a central tooth; instead, it features one very large, hook-shaped lateral tooth and a few smaller marginal teeth.