HMS Scylla is a decommissioned Royal Navy frigate deliberately sunk in 2004 to serve as an artificial reef. Located 1500 metres off the coast of Selsey, the wreck sits upright on a sandy seabed at depths of 32 to 34 metres. This site is suitable for intermediate divers and requires boat access. The structure is largely intact, providing penetration opportunities through internal sections. Divers should be prepared for an overhead environment, variable visibility between 5 and 15 metres, and mild currents that can strengthen unpredictably. Due to the depth and potential for entanglement, proper buoyancy control and the use of a torch are essential.

Cuba is a shore-accessible dive site located in Selsey, United Kingdom, featuring a combination of reef and kelp forest topography. Divers can explore depths ranging from 5 to 30 metres, with an average depth of 18 metres. The site is suited for intermediate divers, offering mild currents and visibility typically between 5 and 15 metres. Water temperatures fluctuate between 9C and 19C throughout the year, necessitating appropriate thermal protection. Divers should be aware of potential surge and swell conditions, particularly in shallower sections, which can impact control and visibility. Arrive self-sufficient as local facilities are unconfirmed.

The UB-81 is a World War One German submarine wreck located off the coast of Selsey. This site is strictly for intermediate to advanced divers, with depths reaching 40 metres and an average depth of 28 metres. Access is by boat charter only, located over 22 kilometres from the shore. Divers should expect mild currents and visibility ranging from 5 to 15 metres. Given the depth, careful dive planning is essential to manage decompression limits and nitrogen narcosis. Surface conditions can be influenced by surge and swell, requiring coordination with the charter skipper. Water temperatures fluctuate between 9 and 18 degrees Celsius throughout the year, making a drysuit advisable.

Edenwood in Selsey offers a combination of natural and artificial reef structures, providing a varied environment for divers. The site is shallow, with depths ranging from 5 to 10 metres, allowing for extended bottom times. Shore entry is standard, and the mild currents make this location suitable for beginners building their confidence. Visibility is highly variable, ranging from 1 to 20 metres depending on local conditions. Divers should exercise caution regarding sharp coral and rocks during entry and while navigating the reef. Water temperatures fluctuate between 9 and 19 degrees Celsius throughout the year, necessitating appropriate thermal protection such as a drysuit or thick wetsuit during cooler months.

Britsum is a wreck and reef site located 1500 metres off the coast of Selsey. Divers encounter depths ranging from 20 to 40 metres, with an average depth of 30 metres. Access is by boat only, and the site features moderate currents that require careful planning around slack water. Visibility typically fluctuates between 3 and 10 metres. Due to the depth and the nature of the wreck structure, this site is suited for intermediate divers. Hazards include entanglement risks, sharp surfaces, and low visibility. A drysuit is recommended given the water temperature range of 9 to 19 degrees Celsius.

Dresden is a shore-entry reef site located in Selsey, United Kingdom. It offers shallow, calm conditions suitable for newly qualified divers to practice buoyancy and navigation. Water temperatures fluctuate between 9C and 18C throughout the year, requiring appropriate exposure protection. Visibility at this coastal reef is variable, and divers should monitor current strength during entry and exit. As facilities are not confirmed, visitors must arrive self-sufficient with all necessary equipment, including a surface marker buoy. Maintain awareness of your surroundings while in the water, as sharks have been reported in this area. Always check local visibility reports before travelling, as conditions can shift considerably between visits.

Bembridge Lifeboat Slip is a shore-entry snorkel site located in Selsey, United Kingdom. The site is characterised by an old outfall pipe and pier structures that have become encrusted with marine growth. Snorkellers can explore these artificial features alongside nearby eelgrass beds, which serve as a nursery area. Water temperatures at this location vary between 9C and 19C throughout the year. Due to the nature of the environment and the required navigation around structures, this site is best suited for intermediate-level snorkellers. It offers a unique opportunity to observe the development of marine life on submerged man-made infrastructure.

Mixon Hole is a reef and wall site located 1600 metres off the coast of Selsey. This drop-off features depths ranging from 6 to 30 metres, with an average depth of 22 metres. The site is defined by strong currents, making it suitable for intermediate divers comfortable with drift conditions. Visibility typically ranges between 10 and 15 metres. Boat access is required to reach the site, and divers must be aware of boat traffic at the surface. Water temperatures fluctuate seasonally between 9 and 19 degrees Celsius. Planning dives around slack water is essential for managing the currents safely.