Inner Mulberry Harbour is a shallow artificial reef and wreck site located 100 metres off the shore of Selsey. The site consists of the remains of a Mulberry Harbour unit, which is visible at low tide. Divers can expect a maximum depth of 5 metres, making this an accessible location for beginners. Conditions are generally mild, with visibility ranging from 2 to 15 metres and water temperatures between 9C and 18C. The habitat supports a variety of temperate marine life, including reef fish and invertebrates typical of the South Coast of England. Shore access is standard for this site, which offers a typical dive duration of 45 minutes.

The Far Mulberry is a prefabricated concrete caisson from the D-Day landings, resting on the seabed at a depth of 10 to 12 metres. Functioning as an artificial reef, the structure offers sheltered recesses and hard surfaces that support temperate reef fish and invertebrates. This site is accessible only by boat, located approximately 1609 metres from the shore. Divers encounter mild currents and visibility ranging from 5 to 15 metres. Given the water temperatures of 9 to 18 degrees Celsius, adequate thermal protection is required. The site is suitable for beginners, though caution is advised around the concrete edges of the caisson to avoid sharp surfaces.

Cuckoo is a wreck site located 500 metres off the coast of Selsey, United Kingdom. This marine site sits at depths between 12 and 15 metres and requires boat access. Divers should anticipate moderate currents that can strengthen, necessitating careful planning around slack water. Visibility is variable, ranging from 3 to 10 metres. Due to the wreck structure, entanglement is a primary hazard, and divers are advised to carry cutting tools. Water temperatures fluctuate between 9 and 18 degrees Celsius throughout the year. The site is suited for intermediate divers who can manage buoyancy and navigation in changing conditions. The surrounding habitat supports various temperate marine life and invertebrates.

Broderick is a combined reef and wreck site located off the coast of Selsey, United Kingdom. Divers can explore depths ranging from 6 to 30 metres, with an average depth of 15 metres. The site features a wreck structure that provides navigation interest alongside the natural reef. Conditions are variable, with visibility fluctuating between 1 and 20 metres and moderate currents that can strengthen unpredictably. Due to boat traffic and potential current, divers should carry a surface marker buoy and deploy it early. Given the water temperatures of 9 to 18 degrees Celsius, a drysuit or thick wetsuit is recommended for this intermediate-level dive.

Selsey Lifeboat Station offers a shallow shore dive ranging from 1 to 10 metres, with an average depth of 6 metres. The site consists of an artificial reef structure alongside natural reef formations. It is suitable for beginners, though divers should be aware of moderate currents, surf, and boat traffic in the area. Water temperatures fluctuate between 9C and 19C throughout the year, and visibility typically ranges from 2 to 5 metres. The site is accessible for shore entries and supports night diving, with typical dive times around 50 minutes. Facilities including parking and toilets are available nearby for visiting divers.

Selsey Beach is a shore-accessible site featuring a mix of reef and artificial reef structures. Suitable for intermediate divers, the site offers depths ranging from 2 to 6 metres with an average of 5 metres. Conditions include strong currents and variable visibility between 3 and 8 metres. Divers should be aware of boat traffic from the active fishing fleet and local lifeboat station, making the use of a surface marker buoy essential. The site is also suitable for night diving. Water temperatures fluctuate between 9C and 19C throughout the year. Typical dives last approximately 50 minutes, with the best conditions found near slack water.

HMS Pine is a wreck site located 9000 metres off the coast of Selsey, United Kingdom. Resting on a flat seabed at depths between 15 and 19 metres, the wreck provides significant hard relief. Divers should expect moderate currents and variable visibility ranging from 5 to 10 metres, occasionally dropping to two metres. Due to the risk of entanglement, divers must carry a cutting tool and a surface marker buoy. This site is suitable for intermediate divers, with boat access required. Planning dives around slack water is essential to manage current conditions effectively.

Wittering is a shore-accessible site on the South Coast of England, offering a combination of reef and wreck diving. Divers typically explore depths between 5 and 10 metres, with an average depth of 7 metres. The site is suited for intermediate divers due to moderate currents and potential surf at the shore break. Visibility varies significantly from 2 to 10 metres, influenced by local weather conditions. Hazards include entanglement risks, rip currents, and strong tidal flows. Divers should consult tidal tables and consider timing entries around slack water. Facilities including parking, air fills, equipment rental, and guided tours are available to support local diving activities.