Big Wall is a vertical reef structure located off Zanzibar West and Stone Town, Tanzania. The site features a dramatic drop-off starting at 14 metres and extending to 70 metres, making it suitable only for advanced divers. Divers experience strong, unpredictable currents that facilitate drift dives along the wall. Visibility ranges from 15 to 30 metres, allowing for clear views of the deep terrain. Access is strictly by boat, and the site is not suitable for snorkelling. Divers must manage buoyancy carefully due to the depth and current, and should be aware of the presence of sharks in the area.

Big Wall is a vertical wall dive located in the open ocean off Zanzibar West and Stone Town. The site features a dramatic drop-off starting at 18 metres and extending to 50 metres, with depths ranging from 14 to 70 metres. Divers encounter a complex topography defined by caves and overhangs. Due to the strong currents and deep profile, this site is strictly for advanced divers. Access is exclusively by boat, with typical dives lasting 50 minutes. Visibility is variable, ranging from 15 to 60 metres. Divers should be prepared for deep diving and overhead environments.

Turtle Reef is a drift dive site located 2000 metres offshore from Zanzibar West and Stone Town. The site features a mixed reef topography ranging from 5 to 30 metres in depth, with an average of 15 metres. Divers should expect moderate currents, though these can fluctuate. Access is by boat only. Visibility typically ranges between 10 and 30 metres, and water temperatures remain between 26 and 29 degrees Celsius. Hazards include lionfish, stonefish, sharks, and sharp coral. Divers must exercise caution regarding buoyancy and hand placement to avoid contact with the reef. The site is suitable for intermediate divers, and night diving is available.

Hunga is a reef dive site located 7408 metres from the shore of Zanzibar West and Stone Town. This site is accessible only by boat and is suited for intermediate divers. The reef features depths ranging from 10 to 18 metres, with an average depth of 15 metres. Divers should be prepared for moderate currents during their visit. Hazards at this location include sharks, sharp coral, stonefish, and strong currents. Water temperatures at Hunga vary between 26C and 29C throughout the year.

Big Wall is a deep drift dive located off Zanzibar West and Stone Town. The site features a vertical drop-off starting at 14 metres and extending to 40 metres, with an average depth of 25 metres. Divers must be prepared for strong currents that run consistently along the wall face, requiring active buoyancy control. Visibility typically ranges between 15 and 30 metres. Due to the depth and current, this site is suitable only for advanced divers. Boat entry is required, and surface conditions can vary significantly from those found along the wall. Night diving is an option for experienced visitors. Facilities are not available on-site, so all necessary equipment must be carried on the boat.

Sand Banks is a boat-access reef located off the coast of Zanzibar West and Stone Town. The site features a depth range of 6 to 30 metres, with an average depth of 18 metres, making it suitable for beginner divers. Visibility typically spans 15 to 30 metres, and water temperatures remain between 26 and 29 degrees Celsius. While currents are generally mild, they can become strong, requiring divers to stay close to their group and guide. Divers should also be prepared for potential temperature drops due to thermoclines and remain aware of their surroundings if sharks are present in the water.

Mnemba Atoll is a marine conservation area located off the coast of Zanzibar. The site features a vast oval reef system with shallow coral gardens, including the area known as Wattabomi. Accessible by boat, the site is suitable for beginners and is highly rated for snorkeling. Water temperatures at the atoll range from 26C to 29C throughout the year. The shallow topography and calm conditions provide a consistent environment for snorkelers to explore the reef structure.

Coral Garden is a reef site located 3000 metres offshore, accessible only by boat. The topography ranges from a shallow 3 metres to a maximum depth of 25 metres, with an average depth of 15 metres. Conditions are generally mild, featuring light currents and visibility between 10 and 30 metres. Water temperatures remain stable between 26 and 29 degrees Celsius. The site includes overhead environments, which require specific training to enter safely. Divers should coordinate with their boat operator regarding departure times and consult their guide before exploring any swim-through sections. This site is suitable for beginners, though caution is advised regarding the overhead structures.