This resembles Dermatobranchus tuberculatus in Gosliner et al (2018) except that this one has fewer brown patches dorsally and possesses a yellow margin. The yellow margin with black spots is similar to one we think is the real D. tuberculatus, but it seems likely they are different species. This animal was crawling on the sand at the dive site called Secret Garden.
The one below was observed at Ligpo.
Created 8 December 2018
Updated 13 March 2022