Sap Suckers; Sacoglossa

The Sap Suckers are strictly vegetarian Sea Slugs, and not so often noticed when scuba diving. They all live on algae in some way or other.

Size no more than 4mm! Found on Avrainvillea algae, maybe on Sargassum seaweed too.

Another really small sap-sucking sea slug, similar in appearance to Costasiella kuroshimae.

A larger sap sucking sea slug, maybe 3 cm long, with elongated parapodia. Previously misnamed E. ornata, which is exclusive to the Caribbean...

First spotted in May 2014, this Sap Sucker is smaller and much more active than its ocellated relation below.

Our most common sap suckers, normally found in shallow waters around Koh Phangan.

Not a juvenile Plakobranchus ocellatus as stated originally - now listed as a separate species.

Seen once only when diving on the west side of Chaloklum Bay, Koh Phangan.