The Batavia wreck lies off Île Jarre in the Riou Archipelago, offering a wreck diving experience at depths between 3 and 18 metres. This site is suitable for intermediate divers, with visibility typically ranging from 5 to 10 metres and mild currents. Access is by boat only, as the site is located 1000 metres from the shore. Divers should be aware of potential entanglement risks within the wreck structure and the presence of sea urchins near the seabed. Surface boat traffic requires caution during ascent. Water temperatures fluctuate throughout the year, ranging from 14C in winter to 21C in August.

Pierre qui Tremble, located at Île de Riou, offers a diverse underwater landscape featuring a reef, a wall, and a cave. Suitable for beginners, the site allows divers to explore shallower areas at 6 metres before descending to a maximum depth of 25 metres. Visibility typically ranges from 10 to 25 metres, providing clear views of the topography. While currents are generally mild, they can strengthen unexpectedly, requiring careful monitoring. Water temperatures fluctuate between 14C and 20C throughout the year, necessitating appropriate thermal protection. Access to this site is strictly by boat, and divers should maintain close contact with their boat operator for safe entry and exit.

Le Pouar is a reef and cavern site located off the Île de Riou. The topography ranges from 3 to 35 metres, with an average depth of 18 metres, making it suitable for beginners in the shallower sections while offering more challenging terrain deeper down. Access is by boat only, situated 2000 metres from the shore. Divers should be prepared for mild currents, though surge and swell can occur, which may impact visibility. Water temperatures fluctuate between 13 and 19 degrees Celsius throughout the year, necessitating appropriate thermal protection. Typical dive times are approximately 40 minutes.

Le Voilier de Plane is a wreck dive located off the coast of the Île de Riou. The site sits at a constant depth of 33 metres, requiring boat access and intermediate diving skills. Divers should be prepared for moderate currents, which necessitate careful planning of descent and bottom time. Visibility at the site ranges from 10 to 30 metres depending on seasonal conditions. Water temperatures fluctuate between 13 and 20 degrees Celsius throughout the year. Due to the depth and potential for cooler water, a thick wetsuit or drysuit is recommended, particularly outside of the summer months.

Les Moyadons is a wall and reef site located off the Île de Riou. The topography features a wall dropping to a maximum depth of 37 metres, with shallower reef sections starting above 10 metres. Divers can expect visibility ranging from 10 to 30 metres. This site requires boat access and is suited for intermediate divers due to moderate currents that can strengthen without warning. Water temperatures fluctuate between 14C and 19C throughout the year. Divers should exercise caution to avoid contact with sharp coral and rock edges along the wall. Planning dives to work against the current during the initial phase is recommended.

Grotte à Pérez, located off the Île de Riou, offers a combination of open reef and cave diving. The site features a depth range of 7 to 40 metres, with an average depth of 25 metres. Divers navigate an overhead environment within the cave system, where visibility typically ranges from 10 to 30 metres. Conditions are generally manageable with mild currents, though the cave structure presents risks of entanglement and sharp rock surfaces. Access is strictly by boat. Due to the technical nature of the cave, this site is suited for intermediate divers holding appropriate cave certification in addition to their open-water qualification.

Les Pierres à Joseph is a reef and drop-off site located off the Île de Riou. The topography descends from 1 to 20 metres, with an average depth of 15 metres. Divers can expect visibility between 10 and 30 metres. Marine life includes very common wrasses and common scorpionfish. Less frequently, divers may encounter great barracuda, Mediterranean moray, conger eel, and various invertebrates such as flatworms, cow snails, and nudibranchs like the tricolor doris. Due to strong currents, this site requires boat access and is best suited for divers who remain close to their guide. Water temperatures range from 14 to 20 degrees Celsius throughout the year.

La Donatello D is a reef and wall site located off the Île de Riou, offering a shallow profile between 9 and 12 metres. This site is well-suited for beginner divers due to the manageable depths and generally calm conditions. Visibility typically ranges from 10 to 30 metres, providing clear sight lines along the reef structure. Access to the site is exclusively by boat, and divers must remain vigilant regarding boat traffic when surfacing. A surface marker buoy is recommended for all ascents. Water temperatures fluctuate between 14 and 23 degrees Celsius throughout the year, necessitating appropriate thermal protection during cooler months.