Fiona pinnata (Eschscholtz, 1831)

Fiona pinnata

sub-classs Opisthobranchia > order Nudibranchia > sub-order Aeolidina > family Fionidae

 

Fiona pinnata may be grey or blue in colour. It lives out its entire life just under the surface of the ocean. It has a cosmopolitan distribution and is generally found on driftwood or old cuttlefish bones that have lots of goose barnacles which are its main food.

Distribution =  widespread on driftwood
Max size =  at least 20mm

ID by Neville Coleman      more info at Sea Slug Forum      more pics at nudipixel