Common Starfish

Asterias rubens

Sighting evidence at Jørpeland Wall, Trondheim Fjord

Photo: Science Coordinator on MS Otto Sverdrup · CC BY-NC

Common starfish are among the most abundant predators on the Jørpeland wall, preying on mussel beds and barnacle patches in the upper zone before descending to hunt sea urchins and bivalves at depth. Their vivid orange coloration creates strong contrast against the white anemone carpet and dark granite. Aggregations of hundreds can form in spring during spawning events, producing one of Norway's most striking mass-marine-life spectacles.

Evidence at this site

2 records within 25 km

Confidence: low

Last confirmed Jun 2026

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.

Common Starfish

Evidence at this site

Seasonality

Also seen at other sites