Aliwal Shoal is a marine reef and wreck site located 5000 metres off the KwaZulu-Natal South Coast of South Africa. This site offers a variety of topography, including reef structures and wrecks, suitable for intermediate divers. Depths range from 5 to 32 metres, with an average depth of 16 metres. Access is by boat, as the site is located well offshore. Divers should be prepared for moderate currents, surge, and variable visibility ranging from 2 to 30 metres. Water temperatures fluctuate between 21C and 25C throughout the year. Hazards include boat traffic, surf, and the potential for decompression issues due to the depth.

Outside Edge is an outer reef system located off the KwaZulu-Natal South Coast. The site features a combination of reef and wall topography that descends to depths between 20 and 30 metres, with an average depth of 25 metres. Divers should expect moderate currents, which can strengthen unexpectedly. Visibility is highly variable, ranging from 5 to 30 metres depending on swell and current conditions. Due to the depth, exposure to currents, and the requirement for boat entry, this site is suitable for advanced divers. Typical dive times are approximately 45 minutes. Surface conditions and visibility are most reliable during May and October.

North Sands is a reef and artificial reef site located 7200 metres offshore at Aliwal Shoal. Divers typically explore this area at depths ranging from 12 to 18 metres, with an average depth of 15 metres. Access to the site is by boat only. Conditions at the site are variable, with visibility ranging between 5 and 15 metres and moderate currents. The site is suitable for beginner divers. Hazards to be aware of when diving here include surge and the presence of sharks. Water temperatures fluctuate throughout the year, ranging from 21C in August to 26C in January.

Inside Edge is a reef located on the Aliwal Shoal, featuring a topography of pinnacles, gullies, swim-throughs, and caverns rising from the sandy seabed. This site is accessed by boat, situated 5000 metres from the shore. Divers can expect depths ranging from 12 to 24 metres, with an average depth of 18 metres. Conditions include moderate currents and visibility typically between 10 and 30 metres. Due to the potential for strong currents and surf, this site is suited for advanced divers. Water temperatures fluctuate between 21 and 25 degrees Celsius throughout the year. Facilities available include air fills, equipment rental, and guided tours.

The Nebo Wreck is a boat-accessible site located 3000 metres offshore, featuring a structure that sits between 19 and 27 metres deep. The wreck offers penetrable sections, creating an overhead environment suitable for intermediate divers comfortable with confined spaces. Conditions are variable, with visibility ranging from 10 to 20 metres and water temperatures fluctuating between 11 and 27 degrees Celsius. While currents are typically mild, divers must be prepared for surges and stronger flows. Due to the depth, potential for entanglement, and overhead sections, a dive torch and line cutter are essential equipment. Divers should monitor their depth closely and check sea conditions, as swell can impact both the boat journey and underwater visibility.

Raggies Cave is a prominent reef and cave system located 4000 metres offshore at Aliwal Shoal. This site features a combination of reef topography and an overhead cave environment, with depths ranging from 10 to 27 metres and an average depth of 11 metres. Divers access the site via boat, where they encounter variable currents and visibility typically between 10 and 18 metres. Due to the presence of an overhead environment, depth, and potential for strong currents, this site is suited for intermediate divers. Guided tours are available to assist with navigation through the reef structures.

Cathedral is a prominent reef and cave system at Aliwal Shoal, defined by a large amphitheatre structure. Divers can navigate the site through a front archway, a roof opening, or a swim-through. The formation creates a crater-like centre that provides shelter from moderate currents and surges. Located 5000 metres from the shore, this site requires boat access and is suited for advanced divers. Depths range from 18 to 27 metres, with an average of 21 metres. Visibility typically varies between 10 and 30 metres. Hazards include sharp coral, strong currents, surf, and surge, as well as the presence of stonefish, lionfish, and sharks.

Cathedral is a reef site located 4000 metres offshore at Aliwal Shoal. This advanced dive site features depths ranging from 18 to 29 metres, with an average depth of 21 metres. Access is strictly by boat. Divers should be prepared for moderate currents and visibility that typically fluctuates between 10 and 30 metres. Water temperatures vary throughout the year, ranging from 21C in August and September to 25C during the summer months. Hazards at this site include jellyfish, lionfish, sharp coral, stonefish, strong currents, and surf. Typical dive times are approximately 45 minutes.