Dive Site: Outer Wall

About Outer Wall

The Outer Wall in Kauehi stands out as a premier dive site within the Tuamotu archipelago of French Polynesia, celebrated for its exceptional coral ecosystems. This site offers an underwater cliff face that plunges dramatically to a depth of 1,500 meters, creating a diverse environment for marine life. It is particularly noted for its pristine hard corals and abundant sponges that adorn the wall. Divers here can expect to encounter a variety of pelagic species that frequent the healthy reef, drawn by the nutrient-rich waters typical of French Polynesia's atolls. While specific seasonal highlights are not detailed for this particular wall, the general region experiences increased pelagic activity during incoming tides in nearby passes, and humpback whales can be sighted during the austral winter. The dive experience at Outer Wall is primarily a wall dive, where buoyancy control is essential to navigate the coral formations without disturbing them. Visibility is often excellent, characteristic of the Tuamotu atolls, allowing for clear views of the extensive reef and the deep blue beyond. The site offers a glimpse into a thriving, untouched underwater world, making it a highlight for those seeking pristine marine environments.

Dive site facts: Outer Wall

Depth

12m to 1500m (wall drop-off)

Current

Variable, potentially mild along the wall

Visibility

30m+

Water temperature

26–29°C

Entry

Liveaboard / Dive boat

Level

Intermediate to Advanced

Dive type

Wall, Coral reef

Region / port

Kauehi, Tuamotu Archipelago

Coordinates

14.9458° S, 144.9754° W

Conditions & Currents

While specific current details for Outer Wall in Kauehi are not extensively documented, dive sites in the Tuamotu archipelago are generally known for their strong currents, particularly in the passes. Outer wall dives typically involve less direct current than pass dives, but divers should still be prepared for potential oceanic currents sweeping along the reef face. Visibility in this region is consistently excellent, often exceeding 30 meters, but it can temporarily decrease after heavy rainfall. Water temperatures are comfortably warm, ranging from 26-29°C, which means thermoclines are not a common concern. Divers should maintain good buoyancy and be mindful of their position relative to the wall to avoid contact with the delicate coral.

Marine life & sighting chances

Hard corals

common

Sponges

common

Grey reef sharks

occasional

Blacktip sharks

occasional

Whitetip sharks

occasional

Napoleon wrasse

occasional

Snapper schools

occasional

Humpback whales

August to October · rare

Manta rays

rare

Dive profile & how the dive runs

Diving the Outer Wall typically begins with a descent along the reef face from the boat. The dive primarily follows the contour of the wall, allowing divers to explore the extensive hard coral gardens and sponges. The profile often involves a gradual progression deeper, perhaps to around 30 meters, before slowly ascending to shallower depths. The turn point is determined by air consumption and no-decompression limits, usually with the goal of spending ample time observing the vibrant reef life at various depth bands. The safety stop is conducted at 5 meters for 3 minutes, often along a shallower section of the wall or in the blue, depending on current conditions.

Underwater photography

The Outer Wall offers excellent opportunities for wide-angle photography due to its pristine hard coral formations, dramatic drop-off, and potential for pelagic encounters. A wide-angle lens, such as a fisheye or a rectilinear wide-angle, is ideal for capturing the grandeur of the wall and its deep blue backdrop. Strong strobes are recommended to bring out the true colors of the corals and sponges, especially in deeper sections. For closer reef subjects or smaller inhabitants of the coral, a macro lens can also be rewarding, though wide-angle is generally preferred here. Good buoyancy control is paramount to avoid damaging the delicate corals and to compose shots effectively against the sheer wall.

Combine with nearby dive sites

• Maiuru

  A submerged plateau on the outer edge of a pass with hard coral gardens and pelagic activity.

• Ohotu

  A second plateau starting at 12m, dropping to 30m, featuring vibrant corals.

• Tumakohua Pass

  A famous pass known for strong currents and large schools of grey reef sharks.

• Garaue Pass

  The northernmost channel of Fakarava Island, noted for consistent shark sightings and strong currents.

• Pakaka Pass

  Located in Apataki, known for pristine corals.

Getting there & logistics

Access to Outer Wall in Kauehi is primarily via liveaboard vessels that traverse the Tuamotu archipelago. International flights typically arrive at Fa'a'ā International Airport (PPT) in Pape'ete, Tahiti, before connecting to domestic flights or liveaboard departure points. Liveaboard itineraries for the Tuamotus, including Kauehi, often span 7 to 10 nights, sometimes combining destinations like Fakarava and Rangiroa. There are no specific dive permits mentioned for Kauehi, but national park fees or biosphere reserve fees may apply in certain areas of the Tuamotus, like Fakarava.

Safety & environment

Diving at Outer Wall, while beautiful, requires adherence to general French Polynesian dive safety standards. Depths are typically limited to 30 meters unless divers hold higher-level certifications and conditions permit. Divers should ensure they have comprehensive dive insurance that covers emergency medical evacuation. The nearest recompression chamber is located in Pape'ete, Tahiti, necessitating a potentially lengthy evacuation for serious incidents from remote atolls like Kauehi. Site-specific hazards include potential currents along the wall, deep drop-offs, and the need for excellent buoyancy control to avoid damaging the pristine coral. Always follow your guide's instructions and maintain a no-touch policy with marine life.

Who it suits — and who it doesn't

FAQ

Outer Wall FAQ

Liveaboards diving Outer Wall

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

Aqua Tiki II

French Polynesia

8 guests

$579/day

Aqua Tiki III

French Polynesia

10 guests20 m

$504/day