Mingant, located off the Crozon Peninsula, offers a diverse underwater experience combining reef, wall, and wreck diving. Divers can explore depths between 10 and 25 metres, with visibility typically ranging from 5 to 10 metres. The site is characterised by strong currents, which necessitate careful planning around slack water to ensure a manageable dive. Due to the cold water temperatures of 11 to 13 degrees Celsius, a drysuit is recommended. The presence of wrecks and potential overhead environments requires appropriate training and navigation skills. Access is strictly by boat, and divers should monitor local conditions for surge and current strength before departure.

Tombant du Belge is a challenging wall dive located off the Crozon Peninsula, featuring a steep drop-off that descends from 25 to 51 metres. Due to the offshore location and strong currents, this site is strictly for intermediate to advanced divers and requires boat access. Divers should anticipate visibility between 5 and 10 metres, necessitating close-up inspection of the wall structure. Water temperatures remain cool, ranging from 10 to 12 degrees Celsius throughout the year, making a drysuit or thick wetsuit essential. Given the significant depths, divers must maintain strict awareness of nitrogen narcosis and time their entry to coincide with slack water to manage the powerful currents.

Le Dellec is a wreck and artificial reef site located off the Crozon Peninsula. Suitable for beginners, the site ranges from 5 to 16 metres in depth with an average of 12 metres. Divers can access the site from the shore or by boat. Conditions include mild currents and visibility between 5 and 10 metres. Marine life observed here includes crabs, sea stars, brittle stars, and occasionally European common cuttlefish, orange-clubbed nudibranchs, and squat lobsters. Due to the wreck structure, divers must remain aware of entanglement risks and overhead environment hazards. Boat traffic is a potential hazard at the surface, and a drysuit or 7mm wetsuit is recommended for the 11 to 14 degree Celsius water.

La Cormorandiere, located off the Crozon Peninsula, is a reef and kelp forest site reaching depths of 15 to 20 metres. This site is defined by strong currents, which can include down currents that affect buoyancy. Divers must remain aware of entanglement risks when navigating through the thick kelp. Visibility typically ranges from 5 to 10 metres, and water temperatures remain between 11 and 14 degrees Celsius. Access is by boat only, and the site is suitable for intermediate divers. Night diving is permitted for those seeking a different perspective of the reef. Divers should plan their visit around slack water to manage the challenging current conditions effectively.

Trez Rouz is a shore-entry reef dive located on the Crozon Peninsula, suitable for beginners building confidence in temperate Atlantic conditions. The site features shallow, calm water with visibility typically ranging from 5 to 10 metres. Water temperatures fluctuate between 11C and 16C throughout the year, necessitating a well-fitted wetsuit. While the reef itself experiences mild currents, divers must exercise caution during entry due to potential surf, shore break, and rip currents. Facilities including parking, showers, and toilets are available on site to assist with post-dive logistics. Always assess tide and surf conditions before entering the water.

Epave 4 Pompes is a wreck and reef site located off the Crozon Peninsula. Divers can explore the structure at depths ranging from 3 to 24 metres, with an average depth of 16 metres. The site is accessible from the shore and features moderate currents. Due to variable visibility that can drop to zero metres, divers should exercise caution regarding entanglement on the wreck structure. A torch and surface marker buoy are recommended for all dives, including night dives. Facilities including parking and toilets are available on shore, making this a practical location for a day trip.

Quatre Pompes, located on the Crozon Peninsula, offers snorkellers the opportunity to explore a WWII German barge wreck. Situated in shallow water near Maison Blanche beach, the site features a well-preserved hull structure. Access is via the shore. Water temperatures in this area range from 11C in the winter months to 16C during the summer. Due to the nature of the site and local conditions, it is considered suitable for intermediate snorkellers. The site is recognised for its accessibility within the Rade de Brest.

The Swansea Vale is a wreck site located 4000 metres off the Crozon Peninsula, resting at depths between 28 and 31 metres. This intermediate-level dive requires boat access and is characterised by strong currents, making it essential to time descents around slack water. Visibility typically ranges from 5 to 10 metres. Divers should maintain strict buoyancy control and remain aware of potential entanglement hazards within the wreck structure. Due to the significant depth and current conditions, careful dive planning is necessary for this 41-minute average dive. Water temperatures remain cool throughout the year, ranging from 11C to 13C.