Longspine Sea Urchin

Diadema setosum

Sighting evidence at Direction Island Drift, Cocos (Keeling) Islands

Evidence at this site

No confirmed records on file at this site

Longspine Sea Urchin 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

Crystal Bay→