Motu Mahana is a shallow reef site located in the Tahaa lagoon, French Polynesia. The topography consists of a sandy bottom interspersed with coral bombies. With an average depth of 3 metres, the site is suitable for beginners and offers visibility ranging from 10 to 25 metres. Access is by boat, as the site is situated 1000 metres from the shore. Divers and snorkellers may encounter mild currents while exploring the area. Species recorded around this area include wrasses, lagoon triggerfish, parrotfish, butterflyfish, and various reef-associated invertebrates. Hazards include sharp coral and occasional strong currents. Guided tours, boat charters, and equipment rentals are available nearby.

Passe de Ceran is a deep drift dive located 1000 metres offshore from Tahaa. The site features a mix of reef and pinnacle topography, with depths ranging from 32 to 50 metres and an average depth of 40 metres. Access is strictly by boat, and the site is suited for intermediate divers comfortable with strong currents. Divers should exercise caution near cave walls and swim-throughs due to surge and overhead environments. Water temperatures remain between 26 and 29 degrees Celsius throughout the year. Always consult local operators regarding current direction and tidal timing before planning a dive, as conditions can vary significantly.

Ceran Pass is a reef and pinnacle site located between Tahaa and Raiatea. The topography features a pass that channels open-ocean water, creating moderate currents that dictate the dive profile. Divers can explore depths ranging from 15 to 46 metres, with visibility typically between 10 and 30 metres. Due to the depth and current, this site is suited for advanced divers. Access is by boat only, and it is essential to coordinate entry times with a local operator to align with the tidal cycle. Be aware of the presence of sharks and a significant thermocline during descent. Proper thermal protection is recommended for these depths.

Trou de la Pieuvre in Tahaa is a demanding dive site that combines a cave system with a steep drop-off reaching 58 metres. The site requires boat access and is suited for advanced divers due to the overhead environment and potential for moderate currents. Divers should maintain solid buoyancy and careful air management, particularly when transitioning between the cave and the open wall. Water temperatures at the site range from 26 to 29 degrees Celsius. Guided tours are available, and it is recommended to dive with a guide on your first visit to navigate the layout effectively. Ensure air fills are prepared before departure as there are no facilities on-site.

Tahaa's Coral Garden is a shallow drift snorkel site located in a channel between two motus within a large lagoon. The site features a depth range of 1 to 3 metres, with an average depth of 2 metres. Access is via the shore, and the site is suitable for beginners. Divers and snorkellers should be aware of moderate currents and sharp coral. Visibility typically ranges from 10 to 25 metres, and water temperatures remain between 27C and 29C throughout the year. The site offers a 60-minute typical experience.

Pa’ipa’i is a shore-entry reef located in Tahaa, French Polynesia, offering depths ranging from 4 to 30 metres with an average of 15 metres. The site features a reef slope suitable for both snorkellers in the shallows and intermediate divers exploring the deeper sections. Visibility is typically between 20 and 40 metres, with water temperatures ranging from 27 to 29C. Currents remain mild, though divers must navigate carefully around sharp coral and rocky structures. A dive shop is available on-site for equipment rental and air fills. Due to local boat traffic, divers should maintain awareness of their position and deploy a surface marker buoy before ascending.

L'Aquarium is a shallow reef site located in Tahaa, French Polynesia, offering depths between 2 and 5 metres. With visibility ranging from 15 to 30 metres, the site provides clear views of the reef environment. Conditions are variable, with currents that require careful monitoring. While shore entry is possible, local guidance recommends using a boat to avoid sharp rocks near the shoreline. The water temperature remains consistently warm, between 27 and 29 degrees Celsius. Divers should remain alert for passing boat traffic at the surface and be aware of the presence of sharks. Guided tours are available and recommended for those unfamiliar with the local current patterns.

Tao-tao is a reef and drop-off site located in Tahaa, French Polynesia. The topography features a shallow reef that transitions into a wall descending to 50 metres, allowing for varied depth profiles. Visibility reaches up to 40 metres, and water temperatures range between 26 and 29 degrees Celsius. While currents are typically mild, they can strengthen unexpectedly, requiring divers to remain close to their guide. Access to this site is by boat only. Divers should exercise caution regarding sea urchins and sharp coral structures when entering or exiting the water. This site is suitable for beginners with an Open Water certification.