Diving in the British Virgin Islands
The British Virgin Islands include a dozen major islands and another 50-plus smaller and uninhabited islands and exposed rock formations. These islands line up in two roughly parallel east-to-west lines, separated by the four-mile-wide Sir Francis Drake Channel, with the easternmost island of Virgin Gorda sheltering the chain from ocean swells generated by seasonal trade winds. The British Virgins are volcanic in origin, resulting in underwater landscapes that tend toward coral-encrusted ledges and slopes rather than fringing reefs. The exception is the remote island of Anegada, which is a low limestone formation flanked by an extensive barrier reef. Because these islands are relatively small, and dry through much of the year, there are no rivers to create viability-robbing runoff. Dive sites tend to start shallow and run to depths of 80 to 90 feet, which is the average depth of the broad plateau that sits below the entire island chain. The waters of the BVI are protected by the National Parks Trust, with no harvesting or anchoring allowed, and mooring buoys provided at all sites. As a result of these protections, the waters hold an abundance and variety of marine life, including groupers, snapper, tarpon, jacks and a wealth of blennies, eels and invertebrates. Many sites sit close to an island, where coves and promontories block prevailing easterly trade winds. Ledges are common features, and these sheltering undercuts hold nurse sharks, eels and lobster. Some sites also feature large submerged rock formations and boulder piles—another legacy of volcanic origins. Here, divers will find crevices, canyons and swim-throughs that shelter marine life and add variety to the profile. A majority of dive operators are based on the primary island of Tortola but there are also dive operators on Virgin Gorda and several smaller islands. A sailing liveaboard, the Cuan Law, has operated in the British Virgins for years, providing access to sites across the archipelago. The most famous dive site in the region is undoubtedly the wreck of the RMS Rhone. This 310-foot iron-hulled steamer floundered and sank off the coast of Salt Island in an 1867 hurricane. Some 150 years later, the bow of the wreck remains largely intact at a depth of 80 feet, and divers can swim through a shadowy interior that was featured in the classic film The Deep. Another significant wreck, the 246-foot Chikuzen sits in open water seven miles north of Tortola, intact and lying on its port side. This wreck attracts huge aggregations of schooling fish, as well as passing sharks, turtles and rays. Stronger currents and a more exposed location make this an advanced dive, and it is most often visited in summer months. More consistent conditions are found at Wreck Alley, where four tugboats sit upright on a sand bottom. Prolific hard coral formations include sites such as Alice in Wonderland, where an expansive field of mushroom corals dominates the slope. Points, ledges and pinnacles feature prominently at many sites. At Cistern Point, tarpon gather on a rocky projection above a grass bed that attracts hawksbill and green turtles, while Vanishing Rock is swarmed by sergeant majors and schooling jacks. Sites to the north include grottoes, clefts, caverns and swim through arches. At Flintstones, divers might imagine themselves in the cartoon town of Bedrock as they make their way through a field of house-sized boulders. Cow's Mouth offers a labyrinth of swim throughs and hidden grottoes, and at West Dogs divers can swim right through the center of the island in the shallow grotto known as Joe's Cave.