Dive Site: Tetamanu - Grouper Wall

About Tetamanu - Grouper Wall

Tetamanu - Grouper Wall, located in the Tumakohua Pass of Fakarava's southern region, is a world-renowned dive site celebrated for its extraordinary marine life, particularly its dense shark populations. This pass is one of two natural gates in the Fakarava Atoll, a UNESCO biosphere reserve, facilitating the exchange of plankton-rich waters that attract pelagic species in large numbers. Divers here regularly encounter a phenomenon known as the 'Wall of Sharks,' an impressive aggregation primarily of gray reef sharks. The dive site features a long, white sandy slope referred to as the 'ski slope,' transitioning into diverse coral reefs. Depths generally range from 5 to 24 meters, making it accessible to a wide range of divers. Beyond the dramatic shark encounters, the area boasts vibrant hard coral gardens, especially stunning Montipora corals on the outer reef slope, creating a rich backdrop for an abundance of reef fish. Fakarava's water temperatures remain consistently warm, averaging 26-29°C year-round, ensuring comfortable diving. Visibility is excellent, typically ranging from 10 to 30 meters. While sharks are a year-round presence, a unique spectacle occurs during the full moon in June or July when thousands of marbled groupers gather to spawn, drawing even more sharks to the area. Diving here typically involves drift dives through the pass, utilizing the incoming currents to experience the dynamic underwater landscape and its inhabitants. The convenience of staying at Tetamanu Diving Village, located directly by the pass, allows divers to be among the first to explore the site each morning. The dive experience focuses on observation points within the pass where divers can safely position themselves to witness the marine spectacle. The blend of abundant pelagic life, pristine corals, and manageable conditions solidifies its reputation as a premier dive destination in French Polynesia.

Dive site facts: Tetamanu - Grouper Wall

Depth

5–24 m

Typical dive

20 m, 60 min

Current

Strong (drift diving)

Visibility

10–30 m

Water temperature

26–29°C

Entry

Live boat / drift entry

Level

Open Water Diver comfortable with currents

Dive type

Drift dive, pelagic, wall, coral garden

Night dive

Possible

Region / port

Fakarava, Tuamotu Archipelago

Coordinates

-16.5167, -145.4167

Conditions & Currents

Diving at Tetamanu - Grouper Wall is characterized by drift dives through the Tumakohua Pass, where currents can be significant, especially during incoming tides. Divers are typically dropped at the 'ski slope' on the ocean side and carried into the pass. Instructors provide briefings on how to safely position oneself by using a reef hook or finger on rocks to observe marine life without damaging corals. While conditions can be dynamic, the currents are generally manageable, making it accessible even for beginner divers comfortable with gentle drift dives. Visibility is consistently excellent, ranging from 10 to 30 meters, and water temperatures remain warm, between 26-29°C, throughout the year.

Marine life & sighting chances

Gray reef shark

Year-round, peak June-July · common

Marbled grouper

June-July (full moon) · common

White-tip shark

Year-round · common

Black-tip shark

Year-round · occasional

Lemon shark

Year-round · occasional

Hammerhead shark

December-March, peak January-February · occasional

Eagle ray

Year-round · occasional

Napoleon wrasse

Year-round · occasional

Bigeye snapper

Year-round · common

Blue-lined snapper

Year-round · common

Tuna

Year-round · occasional

Parrotfish

Year-round · common

Damselfish

Year-round · common

Surgeonfish

Year-round · common

Dive profile & how the dive runs

Dives at Tetamanu - Grouper Wall typically begin on the ocean side of Tumakohua Pass, where divers are dropped by boat onto a broad, gently sloping reef, often called the 'ski slope.' This area, rich with Montipora corals, serves as the entry point before the main drift. The group then turns inwards, allowing the incoming current to carry them into the pass. Divers will visit several observation points, carefully positioning themselves along the coral ridges or on sandy patches (rubble areas) to observe the schooling sharks, particularly the impressive 'Wall of Sharks.' Depths during these observation phases usually remain around 20-24 meters. The dive progresses through the pass, with opportunities to witness other pelagic and reef species. Towards the end of the dive, as current speeds may lessen, the safety stop is often conducted in the shallower areas of the lagoon or near the village of Tetamanu, which also offers excellent photo opportunities among dense fish populations and shallow corals. The entire experience is a planned drift, allowing for extensive observation of the abundant marine life.

Underwater photography

This site offers exceptional opportunities for wide-angle photography, especially to capture the famous 'Wall of Sharks' and the vast schools of fish. A wide-angle lens is essential for documenting the impressive aggregations of gray reef sharks and the expansive coral gardens. During the grouper spawning season in June-July, the sheer number of marbled groupers and associated sharks provides a unique, dynamic subject. Due to the drift diving nature and strong currents, maintaining excellent buoyancy control is crucial to avoid contact with the reef and safely position yourself for shots. Consider using strobes to bring out the vibrant colors of the corals and fish, especially in deeper sections or when shooting against the sun. The shallow areas near Tetamanu village at the end of the dive are ideal for macro subjects or capturing reef fish in dappled sunlight, so having a second camera setup or a versatile lens might be beneficial.

Combine with nearby dive sites

• South Pass - Fakarava

  The broader Tumakohua Pass, encompassing Tetamanu - Grouper Wall, known for its shark density and drift dives.

• North Pass - Fakarava

  Garuae Pass, Fakarava's widest pass, offering similar thrilling drift dives and abundant marine life, including schools of fish and sharks.

• Tikehau - Tuheiava Pass

  Another renowned pass in the Tuamotu Archipelago, famous for its shark encounters and pelagic action.

• Rangiroa - The Aquarium

  A sheltered, shallow site within Rangiroa's lagoon, excellent for reef fish and less experienced divers.

Getting there & logistics

Access to Fakarava, and specifically Tetamanu, typically involves flying into Faaa International Airport (PPT) in Tahiti, then taking a domestic flight to Fakarava Airport. Alternatively, you can fly to Rangiroa Airport (RGI) and then transfer to Fakarava. Flights from Tahiti to Fakarava take about 70 minutes, while from Rangiroa it's a shorter 30-minute flight. Divers often combine Fakarava with other Tuamotu atolls like Rangiroa or Tikehau. Accommodation near Tetamanu is limited but available, with Tetamanu Diving Village offering direct access to the south pass. Trips can vary in length, often as part of a multi-atoll itinerary. There are no specific dive site fees mentioned beyond standard dive operator costs, but French Polynesia is generally a premium destination.

Safety & environment

Diving in Fakarava's passes, including Tetamanu - Grouper Wall, involves strong currents, necessitating good buoyancy control and comfort with drift diving. It is crucial to follow your dive guide's instructions regarding entry points, observation positions, and turn points. The nearest recompression chamber is located in Tahiti, making evacuation a significant logistical and time-consuming process. Therefore, comprehensive dive accident insurance, such as DAN, is highly recommended for all divers. While shark encounters are a highlight, respect their space and behavior. Always use a reef hook or finger on rubble for stability in currents to avoid damaging sensitive corals. Night dives are possible, but require heightened awareness of surroundings and currents.

Who it suits — and who it doesn't

FAQ

Tetamanu - Grouper Wall FAQ

Liveaboards diving Tetamanu - Grouper Wall

These liveaboards may visit Tetamanu - Grouper Wall on selected itineraries — the exact dive sites depend on departure, weather and conditions.

Aqua Tiki II

French Polynesia

8 guests

$575/day

Aqua Tiki III

French Polynesia

10 guests20 m

$501/day