Port Jean is a narrow, rocky cove located on the north coast of Belle-Île-en-Mer, France. This site offers protection from most winds, making it a suitable location for beginners. Divers and snorkellers can explore the rocky edges at depths ranging from 2 to 8 metres, with an average depth of 5 metres. Access is via the shore, and conditions include mild currents and visibility between 3 and 10 metres. Water temperatures fluctuate between 10C and 18C throughout the year, though the water can feel warmer at high tide. Facilities available at the site include parking, showers, and toilets. Typical dives last approximately 45 minutes.

Plage de Bordardoué on Belle-Île-en-Mer is a shore-entry site featuring rocky reef formations. Located near Le Palais, the beach is suitable for beginners interested in snorkelling. The topography includes rocky areas on the left side of the beach, which are accessible for observing intertidal life. Water temperatures remain cool throughout the year, ranging from 10C in winter to 19C in August. Divers and snorkellers should be aware of moderate currents and surf conditions. Parking facilities are available for visitors. This site provides a straightforward entry point for those exploring the coastal geology of the Morbihan Islands.

Crique de Deuborh is a reef site located on Belle-Île-en-Mer, France. This shore-entry location features a rocky plateau on the right side of the beach. The site is suitable for beginners and offers mild currents, making it a popular choice for local dive schools. Water temperatures are cool, ranging from 10C in winter to 19C in August. Facilities available at the site include parking, showers, and toilets. Snorkelling is also well-regarded here, with a rating of 4 out of 5.

L Hanan is a reef dive located off Belle-Île-en-Mer, France, accessible exclusively by boat. The site sits at depths between 22 and 24 metres. Divers should expect visibility of approximately 5 metres, making a dive torch useful for examining the reef surface and crevices. Conditions are characterised by mild currents, which can assist those developing buoyancy skills. Water temperatures fluctuate between 10 and 16 degrees Celsius throughout the year, necessitating a well-fitting wetsuit of at least 5mm for thermal protection. Given the depth, an Open Water qualification is recommended for divers visiting this location.

Ster Vraz is a deep, fjord-like inlet situated on the Côte Sauvage of Belle-Île-en-Mer. This site features impressive underwater drop-offs, reefs, and caves. Access is via the shore, and the site is suited for advanced divers due to the presence of rip currents and surf. Water temperatures are cool, ranging from 10°C in winter to 19°C in August, necessitating the use of a wetsuit. Facilities at the site include parking, toilets, and showers. While the site offers a challenging environment for divers, it is also rated for snorkelling.

Plage du Dotchot is a south-facing cove on Belle-Île-en-Mer, characterised by rocky walls that create a sheltered environment. This site is suitable for intermediate snorkellers, with depths ranging from 3 to 5 metres. The local microclimate, influenced by heat-retaining cliffs, contributes to water temperatures between 10C and 19C. Access is via the shore, and the area features moderate currents. Snorkellers can observe a variety of temperate marine life typical of the region, including reef fish and invertebrates inhabiting the rocky reef structure. Facilities at the site include parking and toilets. Due to the nature of the coastal environment, visitors should remain aware of potential boat traffic and surge.

Port Goulphar is a narrow inlet located on the wild coast of Belle-Île-en-Mer, France, near the Aiguilles de Port Coton. This reef site offers a sheltered entry point for snorkellers when sea conditions are calm. The site features an average depth of 4 metres, with a range between 3 and 5 metres. Access is via the shore, and parking is available nearby. Due to the presence of surf and moderate currents, this site is recommended for intermediate snorkellers. Water temperatures fluctuate throughout the year, ranging from 10C in winter to 19C in August.

Plage de Yeyew on the south coast of Belle-Île-en-Mer offers a rugged underwater topography featuring crevices and small caves. This site is suitable for intermediate snorkellers, with depths ranging from 3 to 18 metres and an average depth of 10 metres. Access is via the shore, and the site is characterised by mild currents and visibility between 5 and 15 metres. Water temperatures fluctuate significantly throughout the year, ranging from 10C in winter to 19C in August. Divers and snorkellers should be aware of potential surf conditions at this location. Parking facilities are available near the site.