Photographed by: Markus Kaufmann
This is not Trapania maculata
. Trapania maculata
has no oral papillae around the front of the head, it has long extra-rhinophoral processes, and its extra-branchial processes are much longer than those on any of these animals.
Mating individuals belonging to 2 different colour forms.
This dorid nudibranch is characterised by possessing some gold markings (either lines, or dashes, or spots) on the mantle, and by 4 tentaculate processes off the front of the head. By contrast, the similar looking Polycera faeroensis
is characterised by the complete absence of gold markings on the mantle, and by 8 tentaculate processes off the front of the head.
This is a colour variation of common North Atlantic species Polycera quadrilineata
(Müller, 1776). It is an interesting case when some colour morphs of one species (e.g. Polycera quadrilineata
) may approach colour variants of another species of the same genus (e.g. Polycera atra
), significantly differs in other features.
Pictures of Polycera quadrilineata
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