Rangiroa is the largest atoll in the Tuamotus and one of the largest in the world, where two ocean passes funnel tidal currents past resident bottlenose dolphins, walls of grey reef sharks, and a winter gathering of great hammerheads. Its signature dive—an incoming-tide drift through Tiputa Pass—is among the most famous in the South Pacific.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Rangiroa ('vast sky') is the largest atoll in French Polynesia's Tuamotu archipelago and the second-largest lagoon on Earth: an 80 km-long ring of roughly 415 motus enclosing a lagoon 77 km long and 26 km wide, with a circumference near 280 km. Diving centres on the two ocean passes in the north—Tiputa and the smaller Avatoru—where each tidal change drives water through narrow channels at several knots. The headline dive is the Tiputa Pass drift on the incoming tide: divers drop into the blue and are carried into the lagoon past hundreds of grey reef sharks, Napoleon wrasse, barracuda, and a resident community of about 25–30 wild bottlenose dolphins that ride the same current. From roughly December to March, great hammerheads patrol the pass mouth to hunt eagle rays, while manta rays are most reliable from July to September. Water sits at 26–29°C year-round and visibility commonly runs 20–40 m. The currents are strong and reverse with the tide, so pass dives are guided drift dives for experienced divers; only the incoming flow is dived for safety, and the nearest recompression chamber is in Tahiti.
Highlights
What makes this dive worth the trip.
Tiputa Pass holds a resident community of roughly 25–30 wild common bottlenose dolphins (Tursiops truncatus) that live year-round in and around the pass; they are not fed or habituated but use the tidal current as a moving walkway, surfing the incoming flow alongside drift divers. The community has been studied for over a decade by ethologist Pamela Carzon and the Dauphins de Rangiroa association.
A peer-reviewed study (Frontiers in Marine Science, 2023) photo-identified great hammerhead sharks (Sphyrna mokarran) at Tiputa Pass, recording at least 85 individuals across the Western Tuamotu, a strongly female-biased aggregation during the austral summer, and seasonal residency and multi-year site fidelity in over 40% of females. The sharks gather mainly December–February (sightings extending November–May) to prey on eagle rays.
Rangiroa is the largest atoll in the Tuamotus and second-largest in the world by lagoon area: an 80 km-long ring of about 415 motus enclosing a lagoon 77 km long and 26 km wide, with a circumference of roughly 280 km. All ocean diving funnels through just two passes, Tiputa and Avatoru, in the north of the atoll.
Marine life
30 species you’re likely to encounter on a dive here.
Dive sites
7 signature sites at this destination.
The Run (Tiputa)
A deep dive performed at the mouth of Tiputa Pass and reserved for the most experienced divers, typically run January–March during great hammerhead season. Divers descend along the pass edge to depths of around 45–55 m to intercept hammerheads hunting the eagle-ray squadrons that move through the channel. Because of the depth, current, and remote location it demands strong gas management, ideally nitrox, and excellent buoyancy. The reward is one of the few reliable places on Earth to see multiple great hammerheads on a single dive.
30–55 madvancedDay boatVery strongVisibility 20–40 m
The Canyons (Tiputa)
A series of natural canyons and faults cutting across the width of Tiputa Pass, dived on the incoming current. The canyons give divers shelter from the strongest flow and act as crossings for grey reef sharks, surgeonfish, whitetip reef sharks, and Napoleon wrasse, with manta rays and hammerheads moving through at depth. It is a classic part of the longer Tiputa drift, often combined with the shark cavern before the team is carried out into the lagoon. Strong, shifting current makes it a site for experienced divers.
15–35 madvancedDay boatStrongVisibility 20–35 m
The Blue (Tiputa)
A deep blue-water dive off the ocean side of Tiputa Pass where the reef drops away into very deep water. Divers hang in open water watching for the larger pelagics—silvertip sharks, silky sharks, and occasionally bottlenose dolphins and tuna cruising past. With no reef reference at depth and the open-ocean drop-off plunging well past recreational limits, the site requires confident buoyancy and good depth discipline. Encounters are unpredictable but can be spectacular when the big sharks are present.
15–40 madvancedDay boatModerateVisibility 25–40 m
Avatoru Pass
Rangiroa's second, smaller pass, west of Tiputa, historically the atoll's first dive site. The outgoing-tide dive on the right side of the pass is shallower and suitable for a wider range of certified divers, with whitetip and blacktip reef sharks and large schools of bigeye and horse-eye jacks; the incoming side delivers stronger, more unpredictable current for advanced divers, with silvertip sharks and occasional manta rays over the reef plateau. Avatoru sees far fewer great hammerheads than Tiputa, which is why most operators now favour Tiputa for the winter shark season.
5–35 mintermediateDay boatStrongVisibility 15–35 m
The Aquarium (Motu Nuhi Nuhi)
A shallow, sheltered coral garden fringing the islet of Motu Nuhi Nuhi at the inner entrance of Tiputa Pass, just a few minutes by boat from the villages. Protected from the strong pass current, it is the atoll's classic site for beginners, training dives, refreshers, and snorkellers, with an exceptional density of reef fish in a small area: schools of humpback red snapper, convict tang, sergeant majors, butterflyfish, and resident blacktip reef sharks over a healthy coral garden. Excellent visibility and easy conditions make it the natural counterpoint to the demanding pass drifts.
3–15 mbeginnerDay boatLightVisibility 15–30 m
Mahuta
An outer-reef drift along an undersea valley of coral formations on the ocean side of the atoll, dived only when the sea is calm. Away from the pass, the current is gentler and the dive showcases the atoll's healthy hard-coral landscape rather than big tidal action, with reef fish, the occasional manta or leopard ray gliding past, and reef sharks patrolling the slope. Its weather dependence makes it an opportunistic alternative when swell or tide closes the passes.
10–30 mintermediateDay boatModerateVisibility 20–35 m
Tiputa Pass
Rangiroa's signature dive and one of the most famous drift dives in the South Pacific. On the incoming tide divers drop into the blue at the pass mouth and are carried into the lagoon, passing walls of grey reef sharks, Napoleon wrasse, barracuda, and the resident bottlenose dolphins that surf the same current. The 10-minute boat ride from the dive shops, easy access, and reliable big-animal action make it the atoll's core dive, though the strong reversing current restricts it to experienced drift divers. From December to March great hammerheads patrol the deeper edges.
5–40 madvancedDay boatVery strongVisibility 20–40 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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