Flabellinid Nudibranch

Flabellina affinis

Sighting evidence at El Ancón, Almería

The vivid purple and cerise Flabellina affinis nudibranch appears in abundance at El Ancón between February and May, crawling across hydroids on the rocky margins adjacent to the meadow in search of its cnidarian prey. Its presence is a reliable indicator of the park's excellent water quality, as nudibranchs are highly sensitive to sedimentation and chemical contamination. Egg masses — delicate white spirals attached to hydroid stalks — are often found close to feeding individuals and represent some of the most photogenic macro subjects in European diving.

Evidence at this site

No confirmed records on file at this site

Flabellinid Nudibranch is listed as a curated species here based on historical reports.

How is this calculated?

Sighting evidence is compiled from iNaturalist observation records within a set proximity radius, filtered for quality-grade observations. “Last confirmed” is the date of the most recent research-grade record. Record count covers a rolling 24-month window. Confidence reflects record count, recency, and consistency of seasonal signal.