*SAGAMINOPTERON PSYCHEDELICUM NUDIBRANCH ~ Originally described from Guam, this animal is now known from many parts of the tropical western Pacific Maximal size : 20 mm. Frequently on the reef flat zone and the fore reef zone. (psychedelicum, indeed.
Dear Bill, I was given these two pictures taken by a local diver, and I have not the slightest idea what is it. My best guess is a slug, possibly related to cerasinu Ceratosoma sinuata (where I saw in your site green and speckle