Scuba Season

Purple Sea Urchin

Strongylocentrotus purpuratus

Sighting evidence at Deadman's Bay, San Juan Islands

Purple Sea Urchin

Photo: Robby Deans · CC BY-NC

Evidence at this site

138 records within 25 km

Confidence: high

Seasonality

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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