What Divers Should Know About Flabellina

Flabellina refers to a genus of aeolid nudibranchs, which are marine gastropod molluscs belonging to the family Flabellinidae. These delicate invertebrates are characterized by two primary features: their cerata, which are uniquely arranged on peduncles, and their annulate rhinophores. These details serve as key identifiers for observing these graceful sea slugs.

The genus Flabellina was originally established in 1833 by John Edward Gray. While the taxonomic landscape for these animals has seen significant scientific reclassification over time, the name continues to denote several specific species. Encountering these fascinating marine organisms offers a glimpse into the diverse world of nudibranchs.