scubaseason

Chromodoris Nudibranch

Chromodoris willani

Sighting evidence at Giant Clam Gardens, Nu'usefata, Apia, Samoa

The encrusting sponge community that grows between clam clusters provides rich habitat for dorid nudibranchs, with Chromodoris willani and related species found on virtually every dive at Nu'usefata. These molluscs sequester toxins from the sponges they eat, making their vivid warning coloration honest advertising of unpalatability to predatory reef fish.

Evidence at this site

No confirmed records on file at this site

Chromodoris 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.

Also seen at other sites