L'arche is a marine dive site located at the Lérins Islands in France. The site features a consistent depth of approximately 13 metres. Conditions at this location vary throughout the year, with water temperatures ranging from 14C in the winter months to 24C during August. Access to the site is typically by boat from the nearby coast. Given the depth and nature of the topography, it is suitable for divers with appropriate training for these conditions. There is no specific data regarding marine life at this site.

Tombant des Sardinaux is a boat-access reef and drop-off site located in the Lérins Islands, France. The topography features a wall descending from 3 metres to 40 metres, with an average depth of 20 metres. Visibility typically ranges between 10 and 25 metres. While currents are generally mild, they can strengthen, requiring careful monitoring and planning with the boat crew. The site is suitable for beginners and supports night diving. Water temperatures fluctuate between 14C and 21C throughout the year. Species recorded around this area include wrasses, scorpionfish, various nudibranchs, and Mediterranean moray eels.

Rocher de la Garde is a diverse marine site located 1000 metres off the Lérins Islands. This site features a combination of reef, wall, and cave topography, with a drop-off that extends from 3 metres down to 55 metres, averaging 18 metres in depth. It is suitable for intermediate divers and snorkelers, with boat access required. Conditions are generally mild, with visibility ranging from 10 to 25 metres. Water temperatures fluctuate between 13C and 20C throughout the year. The site is also suitable for night diving, with typical dives lasting around 45 minutes. Parking is available at the departure point.

Les Sardinaux is a boat-access site located in the Lérins Islands, France, offering a diverse topography of reef, wall, and cave formations. Divers can explore depths ranging from 3 to 40 metres, with visibility typically between 10 and 25 metres. While currents are generally mild, the area is subject to strong flows, requiring careful monitoring throughout the dive. The site is suitable for intermediate divers and supports night diving, where a torch is recommended for exploring the cave structures. Water temperatures fluctuate between 14C and 22C depending on the time of year. Parking is available at the departure point for boat access.

Roche Michel is a reef site located within the Lérins Islands. The topography offers a range of depths from 8 to 45 metres, with an average depth of 25 metres. Access to this site is strictly by boat. Divers should be prepared for moderate currents, which can vary depending on conditions. Given the depth profile and current, this site is best suited for intermediate divers. There is no specific marine life data available for this location. Mooring buoys are available for use from April to mid-November for charter signatories who hold the required permit.

Rabiou, La Cathédrale is a marine dive site located in the Lérins Islands, France. The site features a varied topography with depths ranging from 11 to 38 metres. Access is exclusively by boat. Conditions vary throughout the year, with water temperatures fluctuating between 14C in the winter and 21C in August. The site is suitable for beginners, though depth management is required given the range. Species recorded around this area include wrasses, scorpionfish, Mediterranean moray, common octopus, European common cuttlefish, and various nudibranchs such as the giant doris, tricolor doris, and splendid elysia. Sea stars and flatworms are also present in the surrounding waters.

Arpillon Drop-off is a wall and reef site located 500 metres from the shore of the Lérins Islands. The site reaches depths of 35 to 40 metres, requiring intermediate certification for access. Divers navigate a reef structure with mild currents and visibility ranging from 10 to 30 metres. Water temperatures fluctuate between 14 and 20 degrees Celsius, with colder currents often present near the seabed. Boat access is required to reach the site, and divers should remain vigilant for boat traffic during ascents. Protective gear is recommended to avoid contact with jellyfish and sharp reef structures. The site is supported by local facilities including equipment rental and boat charters.

Le Relax is a reef-based dive site located within Port-Cros National Park. The topography consists of a reef system that descends to depths between 28 and 35 metres. Access to the site is by boat. Visibility typically ranges from 5 to 10 metres, and the site is generally free of currents, assisting with buoyancy control. Due to the depth, this site is suited for experienced divers or beginners accompanied by a qualified instructor or divemaster for supervision. Water temperatures fluctuate between 13 and 21 degrees Celsius throughout the year, necessitating appropriate thermal protection such as a 5mm wetsuit.