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Sakuraeolis nungunoides Rudman, 1980 but lacks the distinctive orange triangle on the head. It is most probably the same species as Jeffrey Rosenfeld's Sakuraeolis sp.
Jeffrey wrote at facebook:"This seems somewhat similar a photo of mine that Terry Gosliner called Sakuraeolis sp."
I can't see enough details to be sure on the generic placement, that's why I use the family Facelinidae Bergh, 1889.
How to cite:
Köhler, E. (2016), published 21 October 2016, Facelinidae sp. 08 Family: Bergh, 1889
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Dexiarchia/Facelinidae_sp_08.htm