Pectenodoris trilineata & prey sponge

August 5, 2000
From: Mike Miller

Dear Bill    
Am attaching a pic of Pectendoris trilineata to complement the image
already on your site.  It would seem the animals in the attached pic are also grazing on the same prey sponge Dysidea sp.?

Location:  Divesite - Mapating. Batangas, Philippines, May 2000.  Depth: 20 ft.  
Mike Miller

Miller, M., 2000 (Aug 5) Pectenodoris trilineata & prey sponge. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Thanks Mike,
It certainly looks like the same sponge. I have nearly always found P. trilineata in numbers clustered on and in burrows it has apparently eaten in the sponge colony, just as your photo shows.
Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Aug 5). Comment on Pectenodoris trilineata & prey sponge by Mike Miller. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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