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.

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.

Mingo Pass is a colourful reef located off Saint John, US Virgin Islands, offering depths between 5 and 18 metres with an average of 12 metres. The topography features dense reef structures adorned with large black sea fans and barrel sponges. Divers and snorkellers can encounter common species including conger eels, flamingo tongues, purple sea fans, spotted cleaner shrimp, wrasses, stoplight parrotfish, and arrow crabs. Uncommon sightings include fairy basslets, queen angelfish, Brazilian reef octopuses, Indian lionfish, goldentail morays, smooth trunkfish, and Caribbean sharpnose puffers. Access is by boat only, and visitors should remain aware of moderate currents and local boat traffic. Visibility typically ranges from 15 to 30 metres.

Mingo Key is a boat-access reef located off Saint John in the US Virgin Islands. The site features a reef structure ranging from 8 to 20 metres in depth, with an average depth of 12 metres. It is suitable for beginners and supports both diving and snorkelling activities, including night diving. Divers should expect moderate currents and visibility typically between 15 and 30 metres. Water temperatures remain warm throughout the year, ranging from 27 to 30 degrees Celsius. Hazards include sharp coral and rocks on the reef floor, and divers should remain aware of their surroundings due to variable visibility.

Mingo Mounds in Saint John is a sloping reef that transitions into a vast sand flat. The site features shallow shelf areas and distinct mounds of reef that provide shelter for marine life. Divers can explore depths ranging from the shallows down to 5 metres. This site is suitable for beginners and is accessible only by boat. Water temperatures remain warm throughout the year, typically between 27C and 30C. Divers should remain aware of boat traffic in the area. The topography offers a mix of reef and muck environments, making it a varied site for those interested in shallow-water exploration.

Caneel Bay on the west coast of Saint John offers a shallow marine environment featuring a mix of coral reef and seagrass beds. Located 50 metres from the shore, the site reaches depths of 2 to 5 metres with an average of 3 metres. Conditions are generally mild with visibility ranging from 10 to 20 metres, making it suitable for beginners. Divers and snorkellers should be aware of boat traffic in the area, as well as the presence of sea urchins and sharp coral. Access is via the shore, with parking and toilet facilities available nearby. Typical dives last approximately 45 minutes.

Squidville is a sloping reef located in Saint John, US Virgin Islands, featuring a sandy bottom that transitions into a reef structure. The site is suitable for all experience levels, including those participating in Discover Scuba programmes. Divers can expect depths ranging from 5 to 18 metres, with an average depth of 10 metres. Visibility is consistently high, typically between 25 and 30 metres, and currents are generally mild. Access to the site is by boat only. Water temperatures remain warm throughout the year, ranging from 27C to 30C. Night diving is permitted at this location. Potential hazards include the presence of jellyfish and sharks.

Hawksnest Beach on Saint John offers a shallow reef environment suitable for beginners. The site features an average depth of 3 metres, with a range between 1 and 5 metres. Access is directly from the shore, making it convenient for both divers and snorkellers. Divers should be aware of moderate currents, surf, and potential boat traffic in the area. When navigating the reef, take care to avoid sharp coral and sea urchins. Facilities at the beach include parking, toilets, showers, and changing rooms. The site provides visibility ranging from 15 to 30 metres, with water temperatures remaining warm throughout the year.