For some time, I was lumping these with Goniodoris aspersa, which I am now convinced is a different species. Goniodoris sp. e059b is less common, but has been found at Enewetak and Kwajalein Atolls, usually under rocks on lagoon reefs and pinnacles.
These three photos show a specimen from a Kwajalein Atoll lagoon reef in a patch of Halimeda algae. It was first observed on the colonial tunicate shown in the first photo. It was found 4 July 2009 at a depth of 22m, and was a large one measuring 17mm in length.
The next specimen was found under a rock on a Kwajalein Atoll lagoon pinnacle at a depth of about 6m on 6 June 2010.
Here is a more distant shot of a pair under a rock on a Kwajalein Atoll lagoon pinnacle from 11 July 2011.
Created 3 January 2007
Updated 23.July 2011