On a background of bryozoans, a macro image by Ryan Murphy, 2011

Photo by Adam Harding, 2011

This is a very small dorid nudibranch, 15 mm in length, with elongate orange-tipped club-shaped tubercles around dorsal margin. Rhinophores are bright red-orange.
We haven’t photographed this nudibranch before, but due to its small size it has probably been overlooked until now.
Domain Eukarya
Kingdom Animalia
Phylum Mollusca
Class Gastropoda
Order Opisthobranchia
Infraorder: Doridina
Family Triophidae
Genus Limacea
Species cockerelli
Common Name: Laila cockerelli (Macfarland,1905)