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 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.

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.

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.

Pange is a reef site located 3000m from shore within the Stone Town Reefs. The site features a gently sloping bottom with coral formations and fans, reaching depths between 5m and 22m with an average of 12m. Access is by boat only. Conditions are generally mild with visibility ranging from 15m to 30m and water temperatures between 26C and 29C. The site is suitable for beginners and supports night diving. Hazards include lionfish, sea urchins, sharp coral, and stonefish. Species recorded around this area include various wrasses, butterflyfish, anemonefish, pufferfish, and surgeonfish.

Changuu Island, located within the Stone Town Reefs, offers accessible snorkelling directly from the island's small beach. The site features shallow water with coral patches, making it a suitable location for beginners. Divers and snorkellers can access the reef from either the shore or by boat. Water temperatures at this site range from 26C to 29C throughout the year. The area is frequently visited in combination with the local Giant Tortoise sanctuary. Conditions at the site are variable, and it is rated as a moderate snorkelling location.

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.

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.