Le Taigetos is a deep wreck site located off the coast of Cap Ferret. The wreck lies at depths ranging between 68 and 80 metres, making this an advanced technical dive. Access is exclusively by boat. Conditions at this site are variable, with visibility typically ranging from 10 to 30 metres and currents generally described as mild. Water temperatures fluctuate throughout the year, reaching a low of 12C in winter and a high of 17C during the autumn months. Due to the significant depth of the wreck, this site is suitable only for experienced technical divers with appropriate training and equipment.

Le Chariot is a wreck and artificial reef located 3000 metres off the coast of Cap Ferret. The site sits at depths ranging from 20 to 41 metres, with an average depth of 30 metres. Access is strictly by boat, and divers must be prepared for variable currents that require careful planning around tidal tables. Due to the significant depth and potential for strong currents, this site is suited for intermediate divers. Species recorded around this area include European Common Cuttlefish, Common Octopus, wrasses, scorpionfish, conger eels, crabs, Tompot Blenny, Barrel Jellyfish, brittle stars, Common Sea Stars, Spiny Spider Crabs, snails, sea squirts, and sea cucumbers.

Port-Maguide at Biscarrosse Lac offers a freshwater snorkeling experience with a sandy bottom and visibility ranging from 5 to 15 metres. The site features a long wooden deck for shore entry, making it accessible for beginners. Depths vary between 1 and 20 metres, with an average depth of 5 metres. Conditions are generally mild, though water temperatures fluctuate seasonally between 12C and 22C. The habitat supports various temperate freshwater fish and invertebrates typical of the region. This site is well-suited for those seeking a calm, shallow environment for snorkelling.

Port-Maguide is a freshwater wreck site located near Cazaux-Biscarrosse. Offering a straightforward shore entry with no current, the site is suitable for beginners. Depths range from 1 to 18 metres, with an average of 10 metres. Visibility is variable, typically between 5 and 10 metres, and divers should be prepared for low visibility conditions. The site features a wreck structure that supports various temperate freshwater fish and invertebrates. Facilities available on-site include parking, toilets, showers, and first aid. Divers are advised to carry a torch to assist with navigation and detail observation due to the changing visibility.

Plage de Navarrosse is a shallow freshwater site located in Cap Ferret, France. The area is notable for its consistent depth of approximately one metre, extending up to 100 metres from the shore. This layout makes it a suitable location for beginners and children to practice snorkeling. The site features seagrass beds and experiences mild currents. Water temperatures vary throughout the year, ranging from 12C in winter to 22C in summer, with warmer conditions often reported during the summer months. Shore access is available, and the site is equipped with parking, toilets, and showers. Typical snorkeling sessions last around 60 minutes.

Port-Maguide, located at Cap Ferret, offers a combination of natural and artificial reef structures. This freshwater site provides varied topography across a depth range of 3 to 30 metres, with an average depth of 15 metres. Divers can expect mild currents and visibility typically between 10 and 20 metres. Due to the nature of the site, boat access is required. Water temperatures fluctuate between 12 and 18 degrees Celsius throughout the year, necessitating appropriate thermal protection. The site is suited for intermediate divers, with typical dives lasting around 45 minutes. Arrange charters in advance and confirm local launch conditions before departure.

Les Blockhaus at Cap Ferret consists of submerged wartime concrete structures that now function as an artificial reef. This site is suitable for intermediate divers, with depths ranging from 6 to 20 metres and an average depth of 17 metres. Divers may encounter moderate currents, requiring careful planning around slack water. Visibility typically spans 5 to 10 metres. Entry can be made by boat or from the shore, though shore entries require caution due to unpredictable surf and shore breaks. Water temperatures fluctuate between 12 and 18 degrees Celsius throughout the year, necessitating appropriate thermal protection. Night diving is permitted at this location.

Banc d'Arguin is a national nature reserve sandbank situated at the mouth of the Arcachon bay near Cap Ferret. This site is accessible exclusively by boat or water taxi from Arcachon or Cap Ferret. Snorkelling is best performed on the interior side of the bank, where the water remains calmer. Conditions vary, with water temperatures ranging from 12C in winter to 22C in August. Species recorded around this area include European Common Cuttlefish, Common Octopus, Gray Seal, Scorpionfish, Conger Eel, various wrasses, Barrel Jellyfish, Tompot Blenny, crabs, sea stars, and Striped Red Mullet. This site is suitable for intermediate snorkellers.