We think this species is Lamprohaminoea ovalis, although it does have some similarity to Lamprohaminoea cymbalum, L. linda and L.sp. e464b. The first photo was taken at Enewetak Atoll, while the second two were from Kwajalein. They are fairly common, often seen at night in tangles of long, stringy Lyngbya cyanobacteria.
The tiny 5mm specimen below was found on 23 May 2010 on the Kwajalein Atoll seaward reef exposed on a hard substrate covered with a thin layer of algae in about 10m of water. We're guessing it may grow up to be a Lamprohaminoea ovalis like the ones above. It does look quite similar to the H. ovalis figured in Gosliner et al (2018).
Created 6 February 2007
Updated 2 December 2018