The Dendrodorididae are not the most handsome or colourful of the Koh Phangan nudibranch! For all that we still enjoy photographing them on SCUBA dives.

This nudibranch is reasonably common, although seasonal. Its colouration gets more and more drab as it gets older.

The black dendrodorid. First sighted years ago and first photographed in 2012 when scuba diving here on Koh Phangan.