Le Nautilus is a combined reef and wreck site located in Arcachon Bay. The site features a wide depth range extending from 6 to 50 metres, allowing beginners to explore shallower sections while providing technical depths for experienced divers. Visibility typically ranges between 5 and 10 metres, requiring divers to maintain close contact with their buddy. Water temperatures are cool, fluctuating between 10 and 15 degrees Celsius throughout the year, making a drysuit or a thick 7mm wetsuit essential for comfort. Access to the site is by boat only, and divers should verify current forecasts and departure times with their charter operator before planning their dive.

Conche des Baleines, also known as Lighthouse Rocks, is located at the western tip of the beach near the Phare des Baleines. The site is characterised by rugged limestone formations, including tide pools and submerged ledges. This shore-entry location is suitable for beginners and offers a snorkel rating of 3 out of 5. Water temperatures at this Atlantic Coast site vary throughout the year, ranging from 10C in the winter months to 20C during the peak summer period of July and August. Divers and snorkellers should be prepared for these seasonal fluctuations in temperature when planning their visit to this coastal area.

U 263 is a submarine wreck located off the coast of Arcachon Bay. Resting at depths between 29 and 30 metres, this site is suited for intermediate divers with advanced certification. Access is by boat only, with the wreck situated approximately 33 kilometres from the shore. Divers encounter mild currents and visibility ranging from 5 to 15 metres. Water temperatures are cold, fluctuating between 10 and 16 degrees Celsius throughout the year. Due to the depth and the nature of the structure, divers must manage entanglement risks and maintain precise buoyancy control. Thermal protection such as a drysuit or a 7mm wetsuit with hood and gloves is recommended.

Petit Bec is a rocky reef site located at the northern tip of the island near Les Portes-en-Ré in Arcachon Bay. This shore-entry site is suitable for intermediate divers, with depths ranging from 1 to 5 metres and an average of 3 metres. Divers should be aware of potential hazards including rip currents, strong currents, surf, and entanglement. Visibility varies between 3 and 10 metres. Species recorded around this area include crabs, sea hares, sea stars, spiny spider crabs, shrimp, snails, shannies, and sea squirts. The site offers basic facilities including parking, showers, changing rooms, and first aid, with a dive shop nearby.

Le Saint Yves is a boat-accessible dive site located in Arcachon Bay, France. The site features depths ranging from 40 to 45 metres, making it suitable for experienced divers. Conditions are variable, with visibility typically between 5 and 10 metres and mild currents. Water temperatures fluctuate throughout the year, ranging from 10C in the winter months to 15C during the summer. Species recorded around this area include crabs, sea stars, and various snails. Divers should be prepared for temperate marine conditions and plan their dives according to the specific depth and environmental factors present at this location.

The Cristina Rueda is a shallow wreck located 1600 metres offshore in Arcachon Bay, France. Resting at an average depth of 8 metres, with a range of 6 to 10 metres, this site is suitable for beginner divers. Access is by boat only, and the site features mild currents with visibility typically between 5 and 10 metres. Divers should remain aware of the wreck structure to avoid entanglement hazards. Water temperatures fluctuate between 10C and 19C throughout the year. Local facilities provide air fills, equipment rental, and guided tours to assist with navigating the wreck layout.

The Épave Sauerland is a shipwreck site located in Arcachon Bay, France. This site is accessible directly from the shore, offering a practical environment for beginner divers to gain experience. The topography consists of a reef structure in shallow, calm water, though conditions such as current and visibility can shift significantly. Water temperatures fluctuate between 10C and 20C throughout the year, necessitating an appropriate wetsuit for comfort. The habitat supports a variety of regional reef fish and invertebrates, providing divers with opportunities to observe local marine life while exploring the wreck and surrounding reef area.

The Sauerland is a wreck located 47 kilometres offshore in Arcachon Bay, serving as an artificial reef. The site profile ranges from 5 to 35 metres, with an average depth of 33 metres. Divers must access the wreck by boat. Conditions are characterised by strong currents, making slack water planning essential for safety. Visibility typically ranges between 5 and 10 metres, and water temperatures remain between 10 and 15 degrees Celsius year-round. Due to the depth and current, this site is suited for intermediate divers. A drysuit or thick wetsuit is recommended for the cold water conditions.