Red flabellina (Flabellina trophina): This nudibranch looks just like red-gilled nudibranch (Flabellina verrucosa), except that its rhinophores are finely annulate, rather than warty, smooth, or bumpy. Another difference is that F. verrucosa has a rounded oral veil ("snout"), whereas F. trophina has a blunt, triangular oral veil. Other diagnostic criteria, such as tail length (longer in F. verrucosa than F. trophina), length of white dorsal stripe (longer in F. verrucosa), and extent of white in cerata (one-fourth white in F. trophina), seem to be less reliable.
- WoRMS Page for Flabellina trophina
- Search Arctos Database for Flabellina trophina (Southeast only)
- Search Arctos Database for Flabellina trophina (entire database)
- Encyclopedia of Life search for Flabellina trophina
- iNaturalist Observations for Flabellina trophina in Southeast Alaska