Jewel Anemone

Corynactis viridis

Sighting evidence at St David's Head, Wales (Pembrokeshire)

Photo: phil_newman · CC BY-NC

St David's Head's shaded rock faces and overhangs are encrusted in dense colonies of jewel anemones, each just 1 to 2 cm across but aggregating in thousands to create an otherworldly carpet of colour ranging from vivid purple to electric orange and lime green. They are clonal colonial animals that reproduce by splitting, so patches of identical colour indicate genetically identical individuals. The tidal races of the headland deliver constant zooplankton to keep their extended tentacles perpetually feeding.

Evidence at this site

11 records within 25 km

Confidence: medium

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.

Jewel Anemone

Evidence at this site

Seasonality

Also seen at other sites