The Yusenquashia Maru is a shipwreck located in Arcachon Bay, resting at depths between 6 and 15 metres with an average depth of 10 metres. This site is accessible only by boat and is suited for intermediate divers. Conditions include a mild current and visibility of approximately 5 metres. Divers should be prepared for surge and swell, which can make entry and exit technical. Due to active boat traffic in the area, it is essential to deploy a delayed surface marker buoy upon ascent. Air fills and boat charters are available locally to support dives, which typically last around 45 minutes.

Ours des Vieilles is a shallow reef located 600 metres offshore in Arcachon Bay. This site is well-suited to beginner divers, offering a relaxed environment with mild currents and depths ranging from 4 to 16 metres, with an average of 10 metres. Visibility typically spans 7 to 10 metres, allowing for clear observation of the reef topography. The site is accessible year-round by boat and permits night diving. Due to water temperatures ranging from 10 to 18 degrees Celsius, a thick wetsuit of at least 7mm or a drysuit is recommended for dives outside of the summer months.

The John G McCullough is a wreck site located off the Atlantic Coast of France, resting at depths between 46 and 50 metres. This site requires boat access and is suited for intermediate divers due to the significant depth. Visibility varies from 5 to 20 metres, and currents are generally mild. Divers should be prepared for water temperatures ranging from 10 to 16 degrees Celsius, necessitating appropriate thermal protection. The wreck structure presents potential entanglement hazards and sharp surfaces, requiring careful navigation. The surrounding habitat supports various reef fish and invertebrates typical of the region.

Anse des Soux in Arcachon Bay offers a varied underwater landscape featuring natural stone arches and small grottos. This site is suitable for beginners, with depths ranging from the surface down to 12 metres. Access is via the shore, where snorkelers should be aware of potential surf and rip currents. Water temperatures are notably colder than on the mainland, fluctuating between 10C and 20C throughout the year. Species recorded around this area include wrasses, conger eels, striped red mullet, sea stars, tompot blennies, cod, snails, sea squirts, triplefins, and sea cucumbers.

Plage des Fontaines in Arcachon Bay offers a sheltered reef environment suitable for beginner snorkellers. The site features a rocky seabed with depths ranging from 2 to 8 metres, averaging 5 metres. Access is via the shore, and the area is generally protected from prevailing winds, resulting in mild currents. Water temperatures are cool, fluctuating between 10C and 20C throughout the year. Species recorded around this area include wrasses, conger eels, striped red mullet, sea stars, tompot blennies, cod, sea squirts, snails, sea cucumbers, and triplefins. Facilities at the site include parking, showers, and toilets.

The Jinsen Maru is an 80-metre cargo ship wreck located 50 metres from the shore in Arcachon Bay. Resting at an average depth of 10 metres, with a range of 8 to 12 metres, the site is accessible by both boat and shore. Divers and snorkellers should be aware of potential entanglement hazards and sharp structures. Visibility at the site varies between 5 and 15 metres, with mild currents. The wreck is best explored in spring, as summer kelp growth can obscure the structure. Water temperatures range from 10C in February to 19C in August.

Ours des Sabias in Arcachon Bay features two large rock formations known as The Bears. A small underwater wall connects these rocks, offering vertical surfaces for exploration. The site is suitable for beginners, with depths ranging from 1m to 12m and an average depth of 6m. Divers typically experience mild currents during 45-minute dives. Access is via a shore entry located 600m from the coast. Water temperatures vary throughout the year, ranging from 10C in February to 19C in August. Parking is available for visitors. Please be aware of sharp coral present at the site.

Anse des Broches is a wild, secluded cove situated on the northwest coast of the island near Pointe du But. This site is suited for advanced snorkellers due to its open ocean exposure, which often results in challenging conditions. Access is via the shore. Water temperatures fluctuate throughout the year, ranging from 10C in February to 20C in August. Given the exposed nature of the location, visitors should be prepared for variable sea states and currents typical of the Atlantic Coast. The site offers a rugged, natural environment for those experienced in navigating open coastal waters.