Jorunna

Jorunna is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Discodorididae. Jorunna species are usually camouflaged to match the sponges they feed on, which in many cases belong to the family Chalinidae. It is likely that many undescribed species exist. There are more than 20 species in genus Jorunna.