Lanveoc, located on the Crozon Peninsula, offers a diverse underwater environment featuring natural reefs, seagrass beds, and artificial reef structures. Divers can explore depths ranging from 5 to 15 metres, with an average depth of 10 metres. The site is suitable for beginners, though conditions vary; visibility typically ranges between 10 and 30 metres. While currents are generally mild, they can become strong, and divers should be cautious of surf or shore breaks during entry. Water temperatures remain between 11 and 14 degrees Celsius, necessitating appropriate thermal protection. Access is possible from both shore and boat, with parking and a cafe available nearby for convenience.

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.

Epave digue sud is a wreck site located off the Crozon Peninsula, France, resting at depths between 10 and 15 metres. This site is suited for intermediate divers who are comfortable managing moderate currents. Visibility typically ranges from 5 to 10 metres and can fluctuate, requiring careful navigation and buoyancy control. Due to the water temperature range of 11 to 14 degrees Celsius, a drysuit is strongly recommended. Access is strictly by boat, and divers should plan their dive around the tidal schedule to coincide with slack water. Hazards include variable visibility and currents, necessitating close proximity to the boat during entry and exit.

G.m.a.p. is a shore-entry reef site located on the Crozon Peninsula in France. The site features shallow, calm waters, making it suitable for beginners. Conditions including current and visibility are variable, so divers should check local sources before entering the water. Water temperatures are cool, ranging from 11C to 16C throughout the year, necessitating a suitable wetsuit and warm clothing for after the dive. Species recorded around this area include European Common Cuttlefish, Gray Seal, Common Octopus, various wrasses, Orange-clubbed Nudibranch, Conger Eel, flatworms, catsharks, Cuckoo Wrasse, squat lobsters, Common Lobster, sea slugs, Spiny Spider Crabs, and sea stars.

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.

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.

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.