Click the thumbnail photos to enhance!
Note the very small specimen bottom right, just above the water sign.
The specimens from the Philippines have an orange black spotted appearance.
Robert F. Boland cites Baba's original species description at his Okinawa Slug Site, and 18 more pictures ( as of 14 July 2016) from Japan (from where it was decribed) show some variation in this species. Maybe there are more pictures of it from other locations at nudipixel - I don't know if this website is down, message "The server at www.nudipixel.net is taking too long to respond."
More information on Polycera abai are at seaslugsofhawaii.com by Cory Pittman & Pauline Fiene!
How to cite:
Köhler, E. (2016), published 14 July 2016, Polycera abai (Baba, 1960)
available from http://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Polycera_abai.htm