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.

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.

Le Jardin des Kiosques is located on the outer slope of the coral reef within the Saint-Gilles Marine Reserve. This site features a varied topography including fissures, tubes, and overhangs that divers and snorkellers can explore. Depths range from 3m to 30m, making the area suitable for both beginners and experienced divers. Access to the site is by boat. Conditions are generally mild, though divers should be aware of the overhead environment within the cave structures and the presence of sharks in the area. Water temperatures fluctuate between 24C and 28C throughout the year.

Le Banc Doré is a coral plateau located within the Saint-Gilles Marine Reserve. The site features a gentle slope ranging from 5m to 20m, interspersed with small sandy corridors. Accessible only by boat, this reef offers mild currents, making it a suitable location for beginner divers, technical training, or those looking to refresh their skills. The topography consists of a varied coral structure across the plateau. Water temperatures at this site remain between 24C and 28C throughout the year.

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.

Le Cimetiere is a reef site located 1000 metres offshore within the Saint-Gilles Marine Reserve. The site features a reef structure at depths between 10 and 12 metres, with an average depth of 11 metres. Divers typically experience mild currents and visibility ranging from 10 to 30 metres. Access is by boat only. Due to active boat traffic in the area, divers should remain close to their guide and use a surface marker buoy. The reef contains sharp coral and rock formations, requiring careful buoyancy control. Water temperatures remain between 24 and 28 degrees Celsius throughout the year.