Sacoglossa from the Philippines

April 19, 2002
From: Erwin Koehler

Dear Bill,
here is the next one from the Philippines,
Lipayo, divesite "El Dorado housereef".
Size 67mm, depth 8m, date 07 March 2002

Koehler, E., 2002 (Apr 19) Sacoglossa from the Philippines. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Erwin,
I would call this Polybranchia orientalis. I think it variation in colour from brown to green is related to its food - either the colour of the algae it is eating, or if it is only feeding on green algae then the light brown colouration is a phase at the end of a feeding cycle.
Bill Rudman

Rudman, W.B., 2002 (Apr 19). Comment on Sacoglossa from the Philippines by Erwin Koehler. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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