About Doriprismatica atromarginata (Cuvier, 1804)
Doriprismatica atromarginata (Cuvier, 1804) varies in body color from creamy-white to yellow and pale brown. It typically has a black-lined edge along the outer margin of its strongly folded mantle, and its rhinophore clubs are black. When the nudibranch crawls, its frilly mantle sometimes moves in a wave-like motion. This species can grow to a total length of at least 60 millimeters. It looks very similar to two related species, Doriprismatica sibogae and Doriprismatica plumbea. However, Doriprismatica atromarginata is much more common than the other two species, and its yellow coloration is not as deep as that of Doriprismatica sibogae and Doriprismatica plumbea. This species occurs throughout tropical and sub-tropical regions of the Indo-Pacific area. Ecologically, Doriprismatica atromarginata is a sponge-feeding species, and has been observed feeding specifically on the sponge Hyatella intestinalis. It can take up metabolites from its food and use these compounds for protection against predators.
