Unknown nudibranch found in a detached piece of hard coral of similar colour.
Via the Facebook group Nudibase, identified as a species of Tenellia, probably T. melanobrachia
Kalanggaman Island, picture of the living holotype, size 42 mm , depth 12 m
sometimes 'Calangaman' written
Two Tenellia sp. of about 40mm in size were found at 10m next to a patch of Goniopora coral with egg ribbons.