Anse des Fossettes is a sheltered bay on the Saint-Jean-Cap-Ferrat peninsula, featuring an official underwater trail known as the Sentier Sous-Marin. This marked route uses buoys and information panels to guide snorkelers through the bay. The site is suitable for beginners, with depths ranging from 0 to 8 metres and visibility typically between 10 and 30 metres. Access is via the shore, and the area includes facilities such as showers and a nearby cafe. Water temperatures fluctuate seasonally between 14C and 26C. Snorkelers should be aware of the potential presence of jellyfish in the water.

Plage des Fosses at Cap Ferrat offers a accessible shore entry suitable for beginners. The site features a combination of natural and artificial reef structures across a depth range of 1 to 9 metres, with an average depth of 5 metres. Divers experience mild currents and visibility ranging from 5 to 15 metres. Water temperatures fluctuate between 14C and 25C throughout the year, requiring appropriate thermal protection. On-site showers are available for rinsing equipment after dives. Be aware of jellyfish in the water column; a full wetsuit or skin suit is recommended for protection.

Paloma Beach is a sheltered limestone cove located on Cap Ferrat, France. The site features a mix of reef and seagrass habitats, with depths ranging from 1 to 8 metres. Access is via the shore, making it suitable for beginners. Conditions are generally calm with mild currents and visibility reaching up to 30 metres. Water temperatures fluctuate between 14C and 26C throughout the year. Species recorded around this area include Mediterranean Moray, Common Octopus, European Common Cuttlefish, Great Barracuda, various wrasses, scorpionfish, and several species of nudibranchs and sea slugs.

Pointe Caussinière at Cap Ferrat features a varied topography consisting of a reef, wall, and drop-off. The site is suitable for intermediate divers, with depths ranging from 3 to 45 metres and an average depth of 35 metres. Access is strictly by boat. Conditions are variable, with visibility typically between 10 and 25 metres and mild currents. Water temperatures fluctuate throughout the year, ranging from 14C in the winter months to 21C during the summer. Divers and snorkellers should remain aware of boat traffic in the area, as well as potential surf and currents.

Sec de Merlo is a deep offshore seamount located 1000 metres off Cap Ferrat. The site features a complex topography of reefs, walls, drop-offs, and cave sections, rising from a depth of 60 metres to a shallowest point of 30 metres. Divers experience consistent visibility of 30 metres. Due to the depth, moderate currents, and potential for nitrogen narcosis, this site is reserved for advanced divers. Access is strictly by boat, and divers must manage decompression requirements and monitor gas consumption closely. Surface marker buoys are essential to remain visible to frequent boat traffic in the area.

Vallée des Gorgones is a reef, wall, and drop-off site located off Cap Ferrat. The terrain extends from 5 metres to a maximum depth of 45 metres, with an average depth of 35 metres. This site requires boat access and is suited for intermediate divers. Conditions include mild currents, though surge and variable visibility between 10 and 30 metres can occur. Divers should be prepared for thermoclines, particularly around 20 metres, and water temperatures ranging from 13 to 20 degrees Celsius. Due to the significant depth, careful monitoring of bottom time and nitrogen narcosis risk is essential during the typical 46-minute dive.

Grotte du Sémaphore at Cap Ferrat offers a diverse underwater landscape featuring a cave, a drop-off, and a reef. Reaching depths between 9 and 40 metres, the site is accessible to beginners who should remain in the shallower sections. Divers encounter various marine life, including common wrasses, scorpionfish, white seabream, and sea stars. Less frequently, observers record Mediterranean moray, lefteye flounder, gurnard, and various nudibranchs like the Cratena slug. The site requires boat access and presents mild currents with visibility ranging from 10 to 30 metres. Due to the overhead cave environment, maintaining buoyancy control is essential. Guided tours are recommended to navigate the layout safely while avoiding contact with the reef and cave walls.

Tombant André is a wall and drop-off site located 100 metres off the coast of Cap Ferrat. The site features a vertical structure descending from 20 metres to a maximum depth of 43 metres, with an average depth of 35 metres. Divers must access the site by boat. Conditions include moderate currents and visibility ranging from 5 to 25 metres. Water temperatures fluctuate between 13C and 21C throughout the year, necessitating appropriate thermal protection. Given the significant depth and potential for rapid descent along the wall, this site is suited for intermediate divers who can manage gas consumption and monitor their dive computers closely.