La grotte à Nono is a boat-access cave and reef site located in the Saint-Gilles Marine Reserve. The dive sits at depths between 30 and 40 metres, with an average depth of 35 metres. Visibility typically ranges from 10 to 30 metres. As an overhead environment, the site requires precise buoyancy control to avoid contact with sharp coral and rock structures. While currents are generally mild, they can become strong, necessitating careful planning and consultation with local operators. This site is suitable for intermediate divers and is accessible for night dives. Facilities including equipment rental, air fills, and boat charters are available nearby in Saint-Gilles-les-Bains.

The Antonio Lorenzo is a 50-metre long longliner wreck resting on its port side in the Saint-Gilles Marine Reserve. Located on a flat, featureless seabed at depths between 32 and 40 metres, with an average depth of 38 metres, this site functions as an artificial reef. Access is by boat only. Due to the depth and potential for entanglement within the structure, this site is suitable for advanced divers. Conditions include moderate currents and visibility ranging from 10 to 30 metres. Species recorded around this area include wrasses, rock cod, Moorish idols, boxfish, triggerfish, moray eels, lionfish, and octopuses.

Sec a zitte is a reef and artificial reef site located in the Saint-Gilles Marine Reserve. The topography consists of two rocky and coral domes that rise from a depth of 40 metres to a shallow point of 14 metres. A notable feature is an anchor resting at a depth of 22 metres. This site is sheltered from the swell, making it a relatively easy dive suitable for beginners. Divers access the site by boat. Visibility is high, typically ranging between 30 and 40 metres, with water temperatures between 24 and 28 degrees Celsius. Night diving is available at this location.

Lagon De Saint-Leu is a shallow reef site located within the Saint-Gilles Marine Reserve. Reaching depths of up to 2 metres, the area features a coral garden that provides a habitat for various marine life. Snorkellers can expect to see wrasses, which are very common, alongside common species such as the Melon Butterflyfish. Less frequently encountered inhabitants include the Snowflake Moray, Guineafowl Puffer, Blackspotted Pufferfish, Raccoon Butterflyfish, Chevron Butterflyfish, Zanzibar Butterflyfish, Spotted Boxfish, Unicornfish, Rock Cod, Pacific Trumpetfish, and various other pufferfish. Access is via the shore, and the site is suitable for beginners due to the mild currents and shallow, protected nature of the reef.

Jardin des pirates is a reef site located within the Saint-Gilles Marine Reserve, offering depths between 15 and 28 metres. Accessible by boat, this site is suitable for beginner divers looking to practise buoyancy in varying current conditions. The water temperature remains between 24 and 28 degrees Celsius throughout the year. Divers frequently encounter wrasses, Moorish idols, and melon butterflyfish. Other species recorded at the site include the snowflake moray, bird wrasse, Guineafowl puffer, palenose parrotfish, Valentini pufferfish, vagabond butterflyfish, rock cod, lagoon triggerfish, masked bannerfish, yellow boxfish, and elongate clam. Visibility can be variable, so it is recommended to check current conditions with your dive operator before departure.

Les Kiosques is a diverse marine site located within the Saint-Gilles Marine Reserve. The topography features a combination of reef structures, caves, and caverns, offering varied underwater terrain for exploration. Depths at the site range from 3m to 32m, making it accessible for beginners while providing deeper sections for more experienced divers. The site is suitable for both diving and snorkelling, with entry possible from either the shore or a boat. Conditions are generally mild, though the presence of caves and caverns creates an overhead environment that requires appropriate caution. Night diving is also permitted at this location.

Baie de Sable is a reef dive located within the Saint-Gilles Marine Reserve. The site is suitable for beginners, offering depths ranging from 15 to 30 metres. Divers can expect consistent visibility of 30 metres throughout the year. Water temperatures remain between 24 and 28 degrees Celsius, allowing for comfortable diving across all seasons. Access to the site is exclusively by boat. As currents at this location are variable, divers should consult with their guide regarding conditions before descending and remain close to their guide during the dive. Be aware of potential entanglement risks within the reef structure.

Les Arches is a reef site located within the Saint-Gilles Marine Reserve, characterised by multiple coral formations. The site features depths ranging from 5 to 20 metres, making it accessible for both beginners and experienced divers. Access to this location is by boat. Divers should be aware of boat traffic in the area. Conditions are generally mild, with water temperatures fluctuating between 24C and 28C throughout the year. The topography consists of coral outcrops that provide a varied underwater environment for exploration.