Horsea Island is an artificial reef site located in Selsey, United Kingdom. This shore-entry dive is suitable for beginners, with depths ranging from 3 to 7 metres and an average depth of 7 metres. Divers typically experience mild currents and visibility between 1 and 8 metres. Water temperatures fluctuate significantly throughout the year, ranging from 4 to 22 degrees Celsius, with winter conditions being notably cold. The site is equipped with air fills, toilets, and showers, and supports night diving. Divers should be aware of potential hazards including entanglement and sharp structures. A typical dive at this location lasts approximately 45 minutes.

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.

Freshwater Bay, specifically around Stag Rock, offers a unique snorkelling experience defined by its prominent chalk sea stacks. The site features a white chalk seabed that reflects light, illuminating the surrounding kelp-covered ridges. Entry is via the shore, and the site is best suited for intermediate snorkellers. Water temperatures fluctuate throughout the year, ranging from 9C in the late winter months to 18C during the peak of summer. Due to the nature of the chalk reef topography and the presence of sea stacks, snorkellers should be mindful of local tidal conditions and currents when planning their visit.

Totland Bay Pier on the South Coast of England offers a shore-accessible dive and snorkel site featuring a combination of pier structures and seagrass meadows. The site is suitable for beginners, with depths ranging from 0 to 8 metres and an average depth of 5 metres. Divers and snorkellers should be aware of moderate currents, boat traffic, and potential surf. Visibility at this location varies between 3 and 10 metres. Facilities available at the site include parking, toilets, showers, and a cafe. Night diving is permitted, and a typical dive lasts approximately 50 minutes.

The HMS A1 Submarine is a wreck site located 3200 metres off the coast of Selsey, United Kingdom. Resting at an average depth of 11 metres, with a range between 9 and 12 metres, the site is accessible only by boat. Divers should be prepared for challenging conditions, as the area is subject to strong currents and visibility that can fluctuate between 0 and 6 metres. Due to these environmental factors, the site is suited for intermediate divers. Facilities available in the area include air fills and boat charter services to reach the wreck.

Tanks & Bulldozers is an artificial reef site located 9400m off the coast of Selsey, United Kingdom. This wreck site features submerged heavy machinery and sits at depths ranging from 15m to 22m, with an average depth of 20m. Divers should expect mild currents and visibility typically between 1m and 6m. Due to the depth and low visibility, this site is suited for intermediate divers. Access is by boat only, with a typical dive duration of 30 minutes. Water temperatures fluctuate throughout the year, ranging from 9C in late winter to 19C in August.

LCT(A) 2428 is a shipwreck and artificial reef located off the coast of Selsey, United Kingdom. The site sits at a shallow depth of approximately 4 metres, making it accessible for beginner divers. Access to the wreck is by boat only. Divers should be prepared for moderate currents and visibility that typically averages 4 metres. Due to the nature of the wreck, hazards include potential entanglement and low visibility. The site is suitable for night diving, with typical dive durations around 30 minutes. Water temperatures at this location fluctuate between 9C in the winter months and 19C during August.

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.