Selection: Flabellina macassarana

Flabellina macassarana Bergh, 1905

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Flabellina macassarana is characterized by its white body and cerata in some speciemens pinkish white or purplish white. The white rhinophores are perfoliate with a diffuse orange tip. The cerata also have diffuse orange tips. The long oral tentacles are bluish-white. This specimen had a total length of 5 cm.
IPN writes: Size: Length 30 mm, in Philippine Marine Mollusks is a picture of a 80 mm specimen from Anilao
References:
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs. Sea Challengers Natural History Books.
Gig Harbor, Washington. 426pp. at page 404
Poppe, G.T. (2010). Philippine marine mollusks: III. (Gastropoda Part 3 & Bivalvia Part 1). ConchBooks: Hackenheim. ISBN 978-3-939767-18-3. 665 pp Pretty similar is Flabellina bicolor which is a smaller species and differs by an orange subapical ring on the cerata and by the long oral tentacles with flattened, paddle-shaped tips.