scubaseason

Dusky Grouper

Epinephelus marginatus

Sighting evidence at Mérou Valley, Corsica

Dusky Grouper

Photo: Billy Bensted-Smith · CC BY-NC

The valley's name says it all — this is grouper territory, with males holding large territories across the granite boulders and smaller females schooling nearby. Spawning aggregations occur in summer when the largest males gather in remarkable numbers. Their curiosity towards divers makes for breathtaking close-up encounters.

Evidence at this site

No confirmed records on file at this site

Dusky Grouper 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.

Also seen at other sites