Reefwander
A white dive ship flying a red-and-white dive flag lies at anchor in turquoise water, with a granite boulder in the foreground and a green island behind — Virgin Gorda & the Dog Islands.

Virgin Gorda & the Dog Islands · British Virgin Islands · Cave & cavern · Reef

Big Grotto

Under an arch into a cathedral-like room open to the surface

Area photo: O'Dea · CC BY-SA 4.0

Big Grotto is a swim-through dive whose route passes under an arch into a cathedral-like room that opens to the surface. It ranges from 5 to 20 m (15 to 65 ft) and is a good place for schools of creole wrasse and for small critters such as cleaner shrimps and arrow crabs.

Where it is and how deep

Depth profile of Big Grotto: typical dive 5–20 m (15–66 ft) 18 m · Open Water30 m · Advanced40 m · Recreational limit5 m20 mtypical dive
Depths on a shared scale to 40 m (130 ft); dashed lines mark common certification limits.

No published position for this site — the map shows Virgin Gorda & the Dog Islands and its other sites; operators know the mooring.

The dive

The dive is built around a swim-through: divers pass under an arch and into a cathedral-like room that leads up to the surface. Schools of creole wrasse gather around the grotto, and the rock walls hide cleaner shrimps and arrow crabs. The site spans 5 to 20 m (15 to 65 ft).

Marine life and season

  • Reef fish swarms
  • Macro critters
Month-by-month season rating for Big Grotto
JanFebMarAprMayJunJulAugSepOctNovDec
PrimePrimePrimePrimeGoodGoodGoodFairFairGoodGoodPrime

Season follows Virgin Gorda & the Dog Islands: High season runs from mid-December through April, when winter seas are rougher but clearer; hurricane risk peaks from late August through September.

Sources

  1. Diving - Sunchaser Scuba — Sunchaser Scuba

More dive sites in Virgin Gorda & the Dog Islands

An archway into a reef canyon that opens on an amphitheatre of pillar coral

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A shallow cavern under West Dog, often full of glassy sweepers

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Some of the largest schools of reef fish anywhere in the BVI

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High-walled canyons lead to a massive arch lined with yellow coral

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Boulder city off West Dog, with eagle rays passing in the deep

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No walls, but ledges and boulders sheltering nurse sharks and grunts

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