Dendrodoris denisoni (Angas, 1864)

Dendrodoris denisoni

sub-classs Opisthobranchia > order Nudibranchia > sub-order Doridina > family Dendrodorididae

Dendrodoris denisoni is characterised by bright blue spots between the pustules.

Distribution =  widespread Indo-west Pacific
Max size =  at least 35mm

more info at Sea Slug Forum      more pics at nudipixel