Two Stones is a reef and pinnacle site located within the Stone Town Reefs of Zanzibar, Tanzania. This site consists of two undersea mountains that channel water, creating conditions suitable for drift dives. Divers can expect depths ranging from 5 to 24 metres with visibility between 15 and 30 metres. The site is accessible by boat only and is best suited for intermediate divers due to the moderate currents. Water temperatures remain consistent throughout the year, ranging from 26C to 29C. Hazards at this location include lionfish, sea urchins, stonefish, and strong currents.

The Great Northern is a British cable-laying ship built in 1870 that sank on New Year’s Eve in 1902. Resting in sand at depths between 4 and 12 metres, this wreck serves as an artificial reef located 8 kilometres from shore. The site is suitable for beginner divers and snorkellers due to its shallow profile. Divers can expect mild currents and visibility ranging from 8 to 35 metres. Water temperatures remain between 26 and 29C throughout the year. Access to the site is by boat only. Divers should exercise caution regarding sharp coral present at the site.

Bawe Reef, located off the coast of Stone Town, features a combination of shallow reef and wall topography. The site offers depths ranging from 3 to 18 metres, with an average depth of 10 metres. Divers and snorkellers access the area via boat, as it is situated 5 kilometres from the shore. Conditions are generally mild with visibility between 10 and 30 metres. The site is suitable for beginners and supports night diving. Hazards include lionfish, sea urchins, sharp coral, stonefish, and the potential for strong currents. Facilities at the nearby dive shop include equipment rental, air fills, and rinse stations.

Pinnacles is a reef site located 1000 metres from shore within the Stone Town Reefs. The topography features pillars, overhangs, and arches ranging from 10 to 16 metres in depth, with an average depth of 10 metres. Access to this site is by boat only. Divers should be aware of boat traffic in the area. Conditions are generally stable, with visibility typically ranging between 15 and 30 metres and water temperatures between 26 and 29 degrees Celsius. The site experiences moderate currents and is suitable for beginner divers.

Bawe Island Reef is located 5 kilometres off Stone Town and features a healthy reef system encircling the island. The site is accessible by boat and is well-suited for beginners. Snorkellers can explore the north and south sides of the reef, which offer the best visibility and coral diversity away from main tourist areas. Water temperatures at this site range from 26C to 29C throughout the year. As a snorkelling destination, it holds a rating of 4 out of 5.

The Royal Navy Lighter is a purposely sunk wreck located 500 metres off Bawe Island within the Stone Town Reefs. Resting at depths between 27 and 30 metres, this artificial reef is suited for advanced divers. The site features mild currents and visibility ranging from 15 to 30 metres. Divers should be aware of the depth, potential for nitrogen narcosis, and the presence of sharp coral and stonefish. Boat access is required for this site, which is also suitable for night diving. Typical dives last approximately 45 minutes, with water temperatures remaining between 26 and 29 degrees Celsius throughout the year.

Aquarium is a reef and wall site located 1500 metres off the coast of Stone Town Reefs. The topography ranges from 14 to 30 metres, with an average depth of 20 metres. Visibility typically spans 10 to 30 metres, and water temperatures remain between 26 and 29C. Access is by boat only. While currents are generally mild, they can strengthen with little warning, and divers should remain aware of sharp coral. Species recorded around this area include wrasses, anemonefish, butterflyfish, pufferfish, surgeonfish, groupers, and various invertebrates. The site is suitable for beginners, though divers should consult their guide regarding current conditions before entry.

Zanzibar Wall is a drift dive site located within the Stone Town Reefs. The topography features a significant wall that spans depths from 2 to 90 metres, with an average depth of 25 metres. Divers must access this site by boat, as it is situated 15 kilometres from shore. Conditions include moderate currents, surge, and visibility ranging from 10 to 40 metres. Due to the potential for strong currents and boat traffic, divers should use a surface marker buoy and confirm current direction with the skipper before entry. This site is suited for intermediate divers who can manage variable conditions and depth profiles.