Castle Reef
Conditions & tides
Scored by DiveConnect's site-physics model
Marine forecast via Copernicus Marine. Score is a rule-based guide from swell/wind vs. the site's exposure — always dive your own assessment.
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About this site
Castle Reef lies along the coastline of Saint Thomas in the U.S. Virgin Islands, part of the reef system fringing the island's shores. Sites in this area are typically reached by short boat trips out of Charlotte Amalie or the island's nearby marinas. The reef reaches a maximum depth of around 24.4 metres and is rated an advanced dive. Divers have also reported eagle rays passing through the site.
AI overviewMarine life here
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Massive Starlet CoralSiderastrea sidereaReported here · unconfirmed
Mustard Hill CoralPorites astreoidesReported here · unconfirmed
Finger CoralPorites poritesReported here · unconfirmed
Greater Star CoralMontastraea cavernosaReported here · unconfirmed
Boulder star coralOrbicella franksiReported here · unconfirmed
Lettuce CoralAgaricia agaricitesReported here · unconfirmed
Eagle rayEagle rayReported here · unconfirmed
Durable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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