Scuba Season

Elkhorn Coral

Acropora palmata

Sighting evidence at Buck Island National Monument, US Virgin Islands

Elkhorn Coral

Photo: Kelcie Troutman · © all rights reserved

Buck Island harbors one of the Caribbean's largest surviving elkhorn coral stands, a species that once dominated shallow reefs throughout the basin but declined by over 90 percent since the 1980s due to disease, bleaching, and hurricane damage. The branching antler-like structures provide the primary three-dimensional habitat complexity that supports the reef's exceptional fish diversity. Recovery of elkhorn at Buck Island has been documented following successive bleaching events, suggesting this population may carry heat-tolerance adaptations worth studying for broader reef restoration programmes.

Evidence at this site

2 records within 25 km

Confidence: low

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.

Also seen at other sites