Nembrotha chamberlaini

Indonesia, Philippines, Japan

Large nudibranch seen fairly often in the region. The gills are red with five branching plumes and non-retractable. The rhinophores a lamellate and long and the same colour as the gills.

Very similar to Nembrotha purpureolineata as sometime they present with blotches rather than lines. Look at the gills. Chamberlaini has the same solid colour (usually red) on the gills with a matching patch on the dorsum.