These would all appear to be Roboastra gracilis. We have about five specimens, the first two photos from Linggatu Cove, Russell Islands, at night on 15 August 1987; the third shot from a night dive at Samata, Russells; and the fourth from Kakambona on Guadalcanal at night on 5 April 1994. Another specimen was observed at Anuha Island, Nggela, on 3 April 1994. The Solomon specimens resemble many of those figured on the Sea Slug Forum, but differ a bit in rhinophore and gill coloration and size from specimens we have identified as this species from the Marshall Islands.
Created 1 January 2008