Near Threatened· population decreasing· assessed 2022

Boulder Star Coral

Orbicella franksi

Sighting evidence at Flat Island Reef, Sint Maarten / Saint-Martin

Photo: mndiminuco · CC BY-NC

Massive boulder star coral heads up to 3 m across dominate the mid-depth reef structures at Flat Island, representing centuries of slow accretion and a cornerstone of the reef's three-dimensional architecture. Their health at this site, with minimal bleaching scarring compared to more visited reefs, reflects the lower human pressure the eastern exposure affords.

Evidence at this site

0 records within 25 km

Confidence: low

No date on file

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.