Tunnels of Thatch is a reef and canyon site located off Saint John. The topography features distinct canyon structures that divers navigate in depths ranging from 16 to 24 metres. Conditions are generally mild with visibility between 10 and 30 metres. Access is by boat only, and divers should be prepared for potential surge and swell. While the site is suitable for beginners, divers must remain alert for boat traffic when surfacing and wear protective footwear to avoid injury from sharp coral and rocks. Species recorded around this area include green sea turtles, nurse sharks, French angelfish, and various parrotfish and wrasses.

Whistling Cay offers a diverse underwater landscape featuring a reef, a wall, and a canyon. Located 270 metres from shore, this site is accessible by boat only. Divers can expect depths ranging from 12 to 30 metres, with an average depth of 16 metres. Conditions are generally mild, with visibility typically between 15 and 30 metres. The site is suitable for beginners, though caution is required near the reef structure to avoid sharp coral, sea urchins, jellyfish, stonefish, and sharks. A typical dive lasts 50 minutes. Ensure you arrange a boat charter in advance, as there are no on-site amenities.

Carval Rock is a reef and drift dive site located near Saint John. The topography features rock formations and swim-throughs, with depths ranging from 15 to 80 metres. Divers can observe a variety of marine life, including common sightings of Foureye Butterfly Fish, Purple Sea Fans, and Blue Tang. Other species recorded at the site include Spotted Moray, Arrow Crab, Stoplight Parrotfish, Wrasses, Atlantic Tarpon, Smooth Trunkfish, Flamingo Tongue, Pederson Cleaner Shrimp, Gray Angelfish, Pacific Trumpetfish, and Basket Starfish. Access to the site is by boat only. Conditions include mild currents and visibility between 33 and 100 metres. Hazards include deep water, overhead environments, strong currents, and surf.

Little Thatch is a drift dive located 800 metres offshore from Saint John in the US Virgin Islands. The site features a reef structure that drops from 27 to 36 metres, with an average depth of 32 metres. Due to the strong currents that frequently sweep through the area, this site is accessible only by boat and is suited for intermediate divers with strong buoyancy control. Visibility varies between 10 and 30 metres. Divers should be aware of sharp coral and rock along the reef edge. Always consult your boat operator regarding current conditions before entering the water, as the drift can be intense.

Johnson's Reef is a shallow marine site located 805 metres offshore from Saint John. With depths ranging from 1 to 10 metres and an average of 6 metres, it is suitable for beginners. Divers and snorkellers can observe species including French Angelfish, Spotted Moray, Striped Parrotfish, Queen Parrotfish, Foureye Butterfly Fish, Whiptail Stingray, Reef Squid, French Grunt, Sea Bass, Yellowtail Snapper, Lizardfish, hard coral, and snails. Visibility typically spans 10 to 30 metres. Access is by boat only. Hazards include boat traffic, jellyfish, rip currents, sea urchins, sharp coral, surf, and surge. Always monitor local surge and swell conditions and use a surface marker buoy.

Lovango Cay is a shallow reef site located 1600 metres from shore in the US Virgin Islands. This site is suitable for beginners, with depths ranging from 1 to 2 metres and an average depth of 1 metre. Divers typically spend 50 minutes exploring the reef, where mild currents and visibility between 10 and 30 metres provide a comfortable environment. Access to the site is by boat only. On-site facilities include a cafe, showers, changing rooms, and a rinse station. Hazards include boat traffic and sharp coral, so maintain awareness of your surroundings while in the water.

Congo is a diverse marine site located off the west end of Congo Cay, Saint John. The topography features a complex mix of reefs, walls, drop-offs, canyons, and pinnacles ranging from 6 to 90 metres in depth. Divers can observe common species including purple sea fans, arrow crabs, foureye butterfly fish, and Christmas tree worms. Uncommon sightings include Indian lionfish, spotted moray, queen angelfish, whiptail stingray, and banded coral shrimp. This boat-access site is suited for intermediate divers due to moderate currents and potential hazards such as entanglement, sharp coral, and sharks. Visibility typically ranges from 14 to 30 metres, with water temperatures between 26 and 29 degrees Celsius.

Watermelon Cay is a reef site in Saint John, US Virgin Islands, offering depths between 2 and 15 metres with an average of 7 metres. The site features visibility ranging from 15 to 30 metres and water temperatures between 27C and 30C. Divers can access the reef via shore or boat. While currents are generally mild, they can strengthen unexpectedly, requiring careful monitoring. Sea urchins are present on the reef, so divers should exercise caution regarding hand and knee placement. The site is suited for intermediate divers who can manage variable current conditions and maintain buoyancy around the reef structure.