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.

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.

Bognor Rocks in Selsey offers a shallow shore dive suitable for beginners. Divers enter from the beach and swim approximately 150 metres south over a sandy bottom to reach the reef. The site consists of rocks interspersed with sand, with depths not exceeding 7 metres. Due to local conditions, this site should be dived at slack water, and divers must deploy a surface marker buoy. The habitat supports a variety of temperate marine life, including various fish and invertebrates typical of the South Coast England region. It is accessible for both diving and snorkelling, providing a straightforward coastal experience.

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.

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.

Arno is a shore-entry reef site located in Selsey, United Kingdom. The site features a wall with depths ranging from 20 to 30 metres. Divers should be aware of moderate to strong currents present at the wall. Visibility at this location is variable and can shift between visits, so checking local conditions prior to entry is essential. Water temperatures fluctuate between 9C and 19C throughout the year, requiring appropriate thermal protection. As facilities are not confirmed at this site, divers should arrive fully prepared with necessary equipment, including a surface marker buoy and surface cover.

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 East Beach is a shore-entry site featuring a mix of reef and artificial reef structures. Located within a Marine Conservation Zone, the topography includes peat and clay exposures. Divers and snorkellers can expect depths between 5 and 10 metres, with an average of 7 metres. The site is suitable for intermediate divers due to strong currents and variable visibility of 5 to 10 metres. Water temperatures range from 9C to 19C throughout the year. The area supports a variety of temperate marine life and invertebrates typical of the region. Facilities include parking, toilets, showers, a cafe, and local dive shops for equipment rental.