Geometric nudibranch

Dauin, Oct 2012.
Goniobranchus geometricus is a small nudibranch which may grow to a total length of 35mm. It is variably coloured, with the ground colour ranging from a creamy brown to purple, The mantle has numerous cream-coloured bumps and has a white margin. The gills and rhinophores are white to greenish.
Habitat:
This species is found throughout the Indian Ocean as well as the Western Pacific Ocean from the intertidal down to 30m.