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Jorunna sp. 05 Genus: Bergh, 1876might be a strange variant.
Pretty similar is Crimora lutea which can have the same colour variation (orange body with black palillae), and the rhinophore and gill colour also varies from pale yellow to black.
More information on Jorunna parva are on Bill Rudman's Sea-Slug Forum!
How to cite:
Köhler, E. (2017), published 4 November 2017, Jorunna parva (Baba, 1938)
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Jorunna_parva.htm