Donga Hienga, located off Bourail, features a diverse underwater topography including reef, wall, drop-off, canyon, and cave structures. Divers can explore these formations at depths ranging from 10 to 18 metres, with an average depth of 15 metres. Visibility varies between 10 and 30 metres. Access is exclusively by boat, and the site is best suited for intermediate divers due to the presence of overhead environments like caves and swim-throughs. While currents are generally mild, they can build unpredictably near drop-off edges. Hazards include sharks, sharp coral, and potential strong currents. Formal overhead training is required for cave and cavern penetration.

Pointe aux cachalots in Bourail offers a diverse underwater landscape featuring a combination of reef, cave, and canyon structures. Divers can explore depths ranging from 15 to 23 metres, with visibility consistently reaching 30 metres. The site is accessible by boat and is suitable for beginners, as currents remain mild. Navigating the cave and canyon requires careful buoyancy control to avoid contact with sharp coral and rock edges. Guided tours are recommended for those unfamiliar with the layout to ensure safe navigation through the varied terrain. Always maintain awareness of surface boat traffic and monitor for surge or swell conditions before entry.

Cathedrale is a marine dive site located off Hienghene, New Caledonia, defined by its dramatic drop-off and complex cave and cavern formations. Divers typically explore the site at depths between 20 and 30 metres, with the topography extending to 40 metres. Visibility ranges from 15 to 30 metres, and water temperatures fluctuate between 24 and 28 degrees Celsius. Access is by boat only. While currents are generally mild, they can strengthen, requiring divers to maintain awareness of conditions and surge. Due to the overhead environments and depth, this site is best suited for intermediate divers comfortable with cave and cavern navigation. A torch is recommended to view the interior details.

La Cathédrale is a marine site located in Bourail, New Caledonia, defined by a deep reef fault that transitions into a tunnel. This passage opens onto a vertical wall, where light filtering through the ceiling creates a cathedral-like effect. The site reaches depths of 30 metres, with an average depth of 23 metres. Access is by boat only, and divers should be prepared for moderate currents. Due to the depth and potential for strong currents, this site is suitable for advanced divers. Visibility typically ranges between 15 and 30 metres, and water temperatures fluctuate between 24C and 28C throughout the year.

Pointe Aux Cachalots in Bourail is a marine dive site featuring a combination of reef, cave, and cavern topography. Divers typically encounter depths averaging 30 metres. Access to this site is exclusively by boat. Visibility at the site generally ranges between 20 and 25 metres. Water temperatures fluctuate throughout the year, ranging from 24C in August and September to 28C during the summer months of January, February, March, and December. Due to the depth and site characteristics, this location is suited for intermediate divers. Divers should be aware of the presence of sharks in the area.

Club Med Reef in Bourail offers a diverse underwater landscape featuring a wall, canyon, cavern, and drop-off. Divers typically explore these formations at depths between 15 and 20 metres. Visibility varies from 10 to 30 metres, allowing for clear observation of the terrain. The site is accessible only by boat and is suited to intermediate divers due to the presence of sharp coral and rock requiring careful buoyancy control. Water temperatures range from 24 to 28 degrees Celsius. Species recorded around this area include wrasses, soft coral, snails, hard coral, and sea cucumbers. Divers should remain aware of sharks present at the site.

Pointe de Kaun is a reef site near Bourail featuring a combination of open reef, caves, and caverns. The topography allows for exploration between 18 and 28 metres, making it suitable for beginner divers with an Open Water certification. The site is accessed by boat, and the absence of current provides a comfortable environment for navigating the overhead cavern sections. Visibility typically ranges from 10 to 30 metres, with water temperatures between 24 and 28 degrees Celsius. Divers should exercise caution within the cave environment, maintaining awareness of their positioning relative to the walls and monitoring air consumption throughout the dive.

Donga Hienga is a reef and cave site located outside the lagoon near Bourail. The topography features underwater caves and arches adorned with massive gorgonian fans. Divers can expect depths ranging from 8 to 30 metres, with an average depth of 18 metres. The site requires boat access and is suitable for intermediate divers due to moderate currents and the presence of overhead environments. Sharp coral is present, requiring careful buoyancy control. Visibility typically varies between 10 and 30 metres, and water temperatures range from 24C to 28C throughout the year. Typical dive times are approximately 50 minutes.