Cerberilla sp. 2.
Order: NUDIBRANCHIA
Suborder: AEOLIDINA
Family: Aeolidiidae
PHOTO
Tulamben, Bali, Indonesia, 9m; 6.5mm long, 22 May 1999. [Crawling on sand substrate]. PHOTO: Clay Carlson.
This is probably a juvenile perhaps of Cerberilla affinis. See Cerberilla annulata to see comparison between juvenile and adult Cerberilla.
See Clay Carlson's message below.
Rudman, W.B., 1999 (November 25) Cerberilla sp. 2. [In] Sea Slug Forum. Australian Museum, Sydney. Available from http://www.seaslugforum.net/factsheet/cerbsp2