scubaseason

Nudibranch (chromodoris)

Chromodoris annae

Sighting evidence at Kendwa Reef, Zanzibar Island

Kendwa's terrace hosts one of the highest nudibranch diversities on the main island, with chromodorid species being the most reliably found — their vivid blue, black and white banding being a textbook example of aposematic warning colouration advertising the toxins sequestered from their sponge diet. Nudibranchs are simultaneous hermaphrodites that mate by aligning parallel with each other, and egg masses laid on sponge surfaces are common at Kendwa between December and March. Over 30 nudibranch species have been recorded at this single site.

Evidence at this site

No confirmed records on file at this site

Nudibranch (chromodoris) 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