Nembrotha aurea  Pola, Cervera & Gosliner, 2008

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Nembrotha aurea is characterized by the presence of broad longitudinal brown lines of irregular width. There is a large dorsal orange to orange-brown background patch between the gills and the rhinophores and another one behind the gills. The ground colour of the body is white or cream white The rhinophores are red, their sheaths range from white to blue, and in some specimens are edges with dark brown. The gills are red and their stalks white or blue.
I am pretty sure that the specimen #5 is a juvenile, it is rather small I guess 6 - 8 mm (no data had been recorded) because there is a picture of a very similar 10 mm specimen from Japan at the Mediterranean Slug Site.
This species was posted on 2 July 2003 at these websites as Nembrotha cf. purpureolineata O'Donoghue, 1924, changed on 17 August 2008 into
Nembrotha aurea  Pola, Cervera & Gosliner, 2008.
More information on Nembrotha aurea are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2016), published 24 June 2016, Nembrotha aurea  Pola, Cervera & Gosliner, 2008
available from http://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Nembrotha_aurea.htm