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I can't see enough details on the above blurry shot to guess a genus, though Dr. Alicia Hermosillo-González labelled it Siphopteron naranja.JPG will I use the family Gastropteridae Swainson, 1840, until I know more.
How to cite:
Köhler, E. (2016), published 24 June 2016, Gastropteridae sp. 03 Family: Swainson, 1840
available from http://www.Philippine-Sea-Slugs.com/Cephalaspidea/Gastropteridae_sp_03.htm