Very unsure on identification. I am aware Geitodoris planata is much rounder in pictures.
In a rockpool. Slow moving compared to other nudibranchs, and didn't attach to my hand during photos.
Update: confirmed Geitodoris planata by Bernard Picton
I believe both of these are Jorunna tomentosa lineage B (see pg12). Upper mid-shore.
Sorry for poor photography, fading light
Recorded beside lots of Ascidia mentula on a night dive
Nepinnotheres pinnotheres?