Tech Océan in Hendaye, France, offers both reef and artificial reef environments suitable for divers and snorkellers of all skill levels. The site features depths ranging from 4 to 25 metres, accommodating a variety of underwater activities including introductory dives and snorkelling excursions. Access to the water is available via both shore and boat entry. On-site facilities include changing rooms, showers, and toilets to support visitors. Water temperatures fluctuate throughout the year, ranging from 12C in January to 19C in August and September. The site provides a versatile environment for those looking to explore the Atlantic Coast marine habitat.

L'indalo Sun-shop is a shore-entry reef dive located 50 metres off the coast of Hendaye, France. The site features a depth range of 5 to 20 metres, with an average depth of 12 metres. Divers encounter mild currents, though conditions vary and visibility can change between visits. The primary challenge is the shore break, which requires careful timing during entry and exit. Due to boat traffic in the area, the use of a surface marker buoy is recommended. Facilities on site include air fills, equipment rental, and guided tours. The water temperature fluctuates between 12C and 19C throughout the year.

Plage du Fort de Socoa in Hendaye is an artificial reef site situated at the base of the historic Socoa Fort. The site features a protective dike that shields the area from ocean waves, resulting in a sheltered environment with a mix of sandy and rocky bottoms. Depths range from 1 to 6 metres, with an average of 3 metres, making it suitable for beginners. Access is via the shore. Visibility varies between 5 and 25 metres, and currents are generally mild. Species recorded around this area include wrasses, crabs, common octopus, marbled electric rays, and various sea slugs and flatworms.

Digue de Socoa in Hendaye offers a combination of natural and artificial reef structures suitable for beginner divers. The site features depths ranging from 3 to 20 metres, with an average depth of 8 metres. Visibility typically spans 5 to 10 metres, and mild currents ensure manageable conditions. Entry is from the shore, though divers must exercise caution regarding surf and shore break conditions. Due to active boat traffic in the area, the use of a surface marker buoy is essential. Water temperatures fluctuate between 12C and 19C throughout the year. Species recorded around this area include wrasses, crabs, common octopus, marbled electric rays, and various nudibranchs.

Digue d'Artha is an artificial reef located in Hendaye, France. This site offers a manageable experience for beginners, with depths ranging from 10 to 15 metres and an average depth of 12 metres. Divers can access the site via shore or boat, encountering mild currents and visibility between 5 and 10 metres. The structure features rocky surfaces and artificial substrate. Species recorded around this area include wrasses, crabs, common octopus, marbled electric rays, and various sea slugs. Due to sharp surfaces on the reef, protective footwear and careful buoyancy control are recommended. A 5mm wetsuit is advised year-round to accommodate water temperatures ranging from 12C to 20C.

Grotte à Balou is a reef and cave site located off the coast of Hendaye, France. Suitable for beginners, the site features depths ranging from 2 to 18 metres with an average depth of 9 metres. Divers experience mild currents and visibility typically between 10 and 15 metres. Access is strictly by boat, and divers must remain vigilant regarding boat traffic. It is essential to use a surface marker buoy and stay close to the dive boat during ascents to ensure visibility to passing vessels. Typical dives last approximately 50 minutes. Parking is available at the launch point for those arriving by vehicle.

Belhara Perdun is a reef located 2500 metres off the coast of Hendaye, France. The site features a reef structure ranging from 14 to 18 metres in depth, with an average depth of 16 metres. Access is strictly by boat due to significant surf at the shore. Divers encounter mild currents at the site, though conditions can vary. Visibility is variable, ranging from 10 to 30 metres. Water temperatures fluctuate between 12 and 20 degrees Celsius throughout the year, requiring appropriate thermal protection. This site is suitable for intermediate divers, with typical dives lasting 45 minutes. Always confirm the sea state with your boat operator before departure.

Plage d'Erromardie is a wide bay on the Basque Coast featuring a mix of sand and pebbles. The site is defined by extensive rocky shelves that are exposed at low tide, with the most suitable areas for snorkelling located along the northern and southern rocky edges of the beach. Divers and snorkellers can expect depths ranging from 2 to 10 metres. Access is via the shore, though conditions vary with mild currents and potential surf. Hazards include rip currents, strong currents, and low visibility. Facilities at the site include parking, toilets, showers, a cafe, first aid, and a dive shop.