The Aeolidida feature long tapering bodies and structures on the back known as cerata, which are often equipped with stinging cells taken from Cnidarians. Some we see regularly at certain dive sites, others are rarities spotted by the Chaloklum Diving team when out hunting for underwater photographs.


We have spotted 3 Cerberilla species so far, all seen on the sand outside Koh Phangan local reefs. (3 Galleries)

Eubranchus mandapamensis; Eubranchidae

This cryptic nudibranch is only 3-4 mm long!

Coryphellina rubrolineata; Flabellinidae

A flamboyant, hydroid-eating, Aeolid Nudibranch - used to be in the genus Flabellina.


Some of the more beautiful Aeolid Nudibranchs that you can see when diving around Koh Phangan. (6 Galleries)

Samla bicolor; Samlidae

Usually very small, fast moving and actually relatively common (when you can spot them!). Previously classified in the genus Flabellina.

Trinchesia yamasui; Tergipedidae

This handsome nudibranch is another hydroid feeder.