North Sovereign Harbour, located in Brighton and Eastbourne, offers a shallow marine dive experience suitable for beginners. Divers can expect an average depth of 2 metres, with conditions generally characterised by mild currents. Access to the water is via a shore entry. Water temperatures in this area fluctuate throughout the year, ranging from 9C in the late winter months to 18C during the peak of summer. Given the shallow nature of the site, it is accessible for those looking for a straightforward, low-depth dive in South Coast England.

Birling Gap is a shore-entry reef site located at the foot of the Seven Sisters cliffs. The topography is defined by unusual chalk platforms and gullies. This site is suitable for beginners, with depths ranging from 0 to 5 metres and an average depth of 2 metres. Conditions are generally mild, though divers and snorkellers should be aware of surf. Water temperatures fluctuate between 9C and 18C throughout the year, with swimming seasons typically reaching 13C to 15C. Facilities available at the site include parking, toilets, and a cafe. The area is best explored during calm weather spells.

Oceana is a wreck dive site located 11 kilometres off the coast of Brighton and Eastbourne. This intermediate-level dive requires boat access and reaches depths between 24 and 30 metres, with an average depth of 27 metres. Divers should be prepared for strong currents and variable visibility ranging from 5 to 10 metres. The site presents hazards including deep water and overhead environments. Water temperatures fluctuate seasonally from 9C in winter to 18C in late summer. The habitat supports a variety of temperate marine life and invertebrates typical of the region. Typical dive times at this location are approximately 50 minutes.

The Twins is a wreck dive site located 11 kilometres offshore from Brighton and Eastbourne. This advanced dive requires boat access and reaches depths between 38 and 49 metres, with an average depth of 44 metres. Divers should be prepared for moderate currents and visibility typically around 8 metres. Given the depth, this site is classified as a deep dive, and typical bottom times are approximately 45 minutes. Water temperatures fluctuate throughout the year, ranging from 9C in late winter to 17C in late summer. Due to the significant depth and environmental conditions, this site is suitable only for experienced divers.

The Mira is a wreck located off the coast of Brighton and Eastbourne, resting at depths between 31 and 36 metres. This site requires boat access and is suited for intermediate divers with experience in deeper UK waters. Divers should be prepared for moderate currents and visibility typically ranging from 5 to 10 metres. The wreck structure offers opportunities for exploration, though the depth necessitates careful management of nitrogen narcosis and buoyancy control. Due to the nature of the wreckage, entanglement is a potential hazard. Divers are advised to book a charter boat familiar with the site to ensure accurate positioning and efficient descent.

The SS Braunton is a wreck site located off the coast of Brighton and Eastbourne. This dive site is suitable for intermediate divers and requires boat access, as it lies approximately 7242 metres from the shore. The wreck sits at depths ranging from 13 to 36 metres, with an average depth of 33 metres. Conditions at the site vary, with visibility ranging from 1 to 20 metres and strong currents present. Divers should be aware of hazards including decompression, nitrogen narcosis, entanglement, and the overhead environment of the wreck. Water temperatures fluctuate between 9C and 18C throughout the year.

Newhaven West Arm is an artificial reef site located 100 metres from the shore in Brighton and Eastbourne. The site features a depth range of 4 to 9 metres, with an average depth of 7 metres. Divers can access the site from both the shore and by boat. Conditions include moderate currents and visibility ranging from 2 to 5 metres. Water temperatures fluctuate between 9C and 18C throughout the year. The site is suitable for beginners and supports night diving, with a typical dive duration of 50 minutes. Hazards to consider include boat traffic, entanglement risks, and surf. Local facilities include parking, air fills, and a dive shop.

The T R Thompson is a shipwreck dive site located off the coast of Brighton and Eastbourne. This site is suitable for intermediate divers and requires boat access, as it lies approximately 19 kilometres from the shore. Divers can expect depths ranging from 14 to 30 metres, with an average depth of 25 metres. Conditions at the site are variable, with moderate currents, potential for low visibility, and risks of entanglement. Marine life recorded at the site includes snails, which are very common. Water temperatures fluctuate throughout the year, ranging from 9C in the winter months to 18C during late summer.