Hypselodoris emma

Seen in Malapascua, Philippines (2012). Photo by Mark Bockstael (my husband). Hypselodoris emma is a species of sea slug or dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae. This nudi has a pale-yellow body and a purplish-blue mantle edge and foot. There are typically three purple lines running longitudinally down the length of the dorsum. The gills and rhinophores are reddish brown. Hypselodoris emma can reach a total length of at least 40 mm and has been observed feeding on sponges from the genus Dysidia.
Habitat: This nudibranch is found throughout the tropical Indo Pacific Ocean.