Green Sea Urchin

Strongylocentrotus droebachiensis

Sighting evidence at Nordkoster Urchin Fields, Kosterfjord

Photo: kentmeyers · CC BY-NC

Evidence at this site

1 record within 25 km

Confidence: low

Last confirmed Aug 2025

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.