Cuthona yamasui from Myanmar

May 28, 2002
From: Boo Nilsson

Hi Bill,
Came across these two Flabelina's (?) feeding on a crinoid while diving in the Mergui archipelago in Myanmar earlier this year. Any ideas? Seen at about 7 meters depth, 30mm long.


Nilsson, B., 2002 (May 28) Cuthona yamasui from Myanmar. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Boo,
Thanks for this photo. I think this is the first nudibranch we have had from Myanmar [Burma]. I am pretty sure it is the species I am calling Cuthona yamasui. The hydroid it is on looks quite like the stinging hydroid Aglaophenia on which ths species was first reported.
Best wishes,
Bill Rudman

Rudman, W.B., 2002 (May 28). Comment on Cuthona yamasui from Myanmar by Boo Nilsson. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from


Cuthona yamasui

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