Click the thumbnail photos to enhance!
It is part of the 'Flabellina rubrolineata look-alike' complex:
Pretty similar are
Unidentia angelvaldesi, which differs by the broad white band on the translucent orange rhinophores, and by the translucent orange background colour,
Flabellina rubrolineata, which differs by papillate whitish rhinophores with purplish tips,
Flabellina cf. rubrolineata, which differs by the translucent bluish rhinophores and oral tentacles.
Unidentia cf. angelvaldesi which lacks the purple longitudinal lines.
There are many pictures of the 'Flabellina rubrolineata look-alike' complex as Flabellina sp. from various locations at Nudi Pixel!
How to cite:
Köhler, E. (2016), published 12 November 2016, Flabellina sp. 05 Genus: Voigt, 1834
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Flabellina_sp_05.htm