This little 9mm nudibranch certainly appears to be a species of Cerberilla, but does not match any we are aware of. The relative size of its eye suggests it is probably juvenile, so it could change color as it grows. It was found buried in a thin layer of sand over hard rock on the Kwajalein Atoll seaward reef in about 8m of water on 18 March 2012.
Created 31 March 2012