scubaseason

Sunflower Sea Star

Pycnopodia helianthoides

Sighting evidence at Dodd Narrows, British Columbia

The sunflower sea star — the world's largest sea star and one of the fastest-moving — was once abundant at Dodd Narrows before the catastrophic sea star wasting disease of 2013 to 2015 eliminated over 90% of populations across the Pacific Coast. Small numbers of recovering individuals have been documented at this site in recent years, making each sighting scientifically significant. Their recovery is critical to kelp forest health, as they are the primary predator controlling sea urchin populations that would otherwise overgraze the kelp.

Evidence at this site

No confirmed records on file at this site

Sunflower Sea Star 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.