Dive Site: Reta Wall

About Reta Wall

Reta Wall in Alor presents a dramatic wall dive topography, an extraordinary feature often found in this region. Alor's unique geographical position at the confluence of the Indian and Pacific Oceans ensures strong tidal exchanges, sweeping nutrient-rich waters through narrow volcanic channels. This process cultivates a thriving, productive marine ecosystem, leading to an impressive diversity of underwater habitats. The coral life here is generally healthy, with a mix of hard corals and large sponges, though gorgonians are less common. Visibility can vary, ranging from crystal clear to somewhat murky, similar to conditions in other parts of Indonesia. The marine life at Reta Wall, and Alor in general, is remarkably diverse. While larger pelagics like sharks and rays are not primarily featured here, the site teems with a 'bazillion' small reef fish. You might also encounter fusiliers, surgeonfish, and unicornfish schooling along the wall. The wall itself likely provides a habitat for various macro critters, though specific rare finds may require keen searching. The rich ecosystem supports numerous species, making every dive an opportunity for discovery. Diving at Reta Wall requires an intermediate to advanced skill level, largely due to the currents. Alor is known for its Komodo-esque currents, which include significant upwellings and unpredictable whirlpools during tidal changes. Divers can expect to be swept off sites near the end of a dive, a common occurrence in these strong currents. Water temperatures can fluctuate significantly, ranging from warm 82-83°F (28°C) to cooler 68°F (20°C). Entry and exit typically involve boat diving with experienced guides who navigate the variable conditions by adapting to tides and currents.

Dive site facts: Reta Wall

Depth

5–40m+

Typical dive

15–30m, 45–60 min

Current

Moderate to strong

Visibility

20–30m

Water temperature

24–28°C

Entry

Tender / negative entry often required

Level

Advanced recommended, current experience helpful

Dive type

Wall, drift, pelagic

Night dive

Not typical

Region / port

Alor, East Nusa Tenggara

Coordinates

-8.385, 124.05

Conditions & Currents

Reta Wall frequently experiences moderate to strong currents due to its location in an area where major ocean currents converge. These currents are a key factor in the site's rich biodiversity, sweeping nutrients past the reef, but they also necessitate careful dive planning and good buoyancy control. Divers should be prepared for potential drift diving conditions, where the boat follows the divers' progress along the wall. Negative entries are sometimes required to quickly descend below the surface turbulence and into the calmer water closer to the reef. The strength of the current can vary, occasionally becoming strong enough to alter dive plans. While visibility is generally good, strong currents can sometimes stir up sediment, though this is less common on wall dives. Surface marker buoys and current hooks are advisable for safety and ease of retrieval.

Marine life & sighting chances

Hammerhead shark

September · occasional

Thresher shark

August · occasional

White-tip reef shark

occasional

Eagle ray

occasional

Manta ray

occasional

Mola mola

rare

Dolphin

common

Pilot whale

November · occasional

Giant trevally

common

Barracuda school

common

Napoleon wrasse

occasional

Bumphead parrotfish

occasional

Sea snake

occasional

Bluefin trevally

common

Dive profile & how the dive runs

Diving Reta Wall typically begins with a boat entry, often a negative entry or swift giant stride, to quickly descend below potential surface currents. Divers then follow the reef profile, which drops as a steep wall, usually maintaining a depth between 15-30 meters. The dive becomes a drift along the wall, allowing the current to carry you past diverse coral formations and schooling fish. Keep an eye on the blue for pelagic activity drawn in by the nutrient-rich flow. The dive master will manage the direction and pace, utilizing the current to cover a significant section of the wall. The turn point is determined by air consumption and bottom time. The ascent usually involves deploying a surface marker buoy at approximately 5 meters for a safety stop, after which the boat picks up divers downstream.

Underwater photography

Reta Wall offers fantastic opportunities for wide-angle photography, especially given its dramatic wall topography and potential for pelagic encounters. A wide-angle lens is ideal for capturing the expansive coral formations, schools of fish, and the sheer scale of the drop-off. For macro enthusiasts, while the wall itself isn't a dedicated critter site, smaller reef residents can still be found amongst the corals; however, strong currents may make focused macro photography challenging. Consider external strobes to bring out the vibrant colors of the corals and fish against the deep blue. Practicing excellent buoyancy control is crucial to avoid contact with the reef in potentially strong currents and to maintain stable shots. Be prepared for rapid changes in current, which can affect camera stability.

Combine with nearby dive sites

• The Arch

  Natural underwater rock arch with soft corals and resident sweetlips.

• Pura Island Drop-off

  Offers vibrant reef life on steep drop-offs.

• Clown Valley

  Famous black sand muck dive site teeming with macro life, including clownfish and nudibranchs.

• Kal's Dream

  Pristine coral wall attracting fusiliers, barracuda, and hammerheads.

• Beang Abang

  Night dive heaven on Pantar Island for mimic octopus and rare critters on black sand slopes.

Getting there & logistics

Access to Alor typically involves flying into Kupang (KOE) in West Timor, followed by a domestic flight to Alor's Mali Airport (ARD). Alternatively, liveaboards frequently include Alor in their itineraries, often departing from Maumere or Labuan Bajo, offering comprehensive diving experiences. Land-based dive resorts usually arrange transfers from Mali Airport to their facilities. Dive trips are commonly 7-10 days to allow for exploration of Alor's diverse sites. Marine park fees may apply. Combining Alor with other Indonesian destinations like Komodo or Raja Ampat is a popular option for extended dive holidays, though Alor itself offers enough variety for a dedicated trip.

Safety & environment

Safety at Reta Wall, and throughout Alor, requires careful attention to current conditions, as they can be strong and unpredictable. Always follow your dive guide's instructions regarding entry techniques, dive profiles, and planned safety stops. The nearest recompression chamber is located in Bali, emphasizing the importance of conservative dive planning and maintaining adequate insurance that covers emergency medical evacuation and hyperbaric treatment. Divers should be proficient in drift diving techniques and comfortable with negative entries. Carry a surface marker buoy (SMB) and know how to deploy it, as well as a whistle or other signaling device. Always dive with a reliable buddy and stay in close proximity to your group. Given Alor's remote nature, emergency response times can be longer than in more developed areas.

Who it suits — and who it doesn't

FAQ

Reta Wall FAQ

Liveaboards diving Reta Wall

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

Naga Biru

Indonesia

12 guests40 m

$273/day

Jaya

Indonesia

14 guests23 m

$280/day

Komodo Aggressor

Komodo, Indonesia

16 guests29 m

$312/day

Blue Manta

Indonesia

20 guests45 m

$482/day

Gaia Love

Alor

20 guests

$554/day

Emperor Raja Laut

Raja Ampat, Indonesia

12 guests31 m

$413/day

Coralia

Indonesia

16 guests48 m

$563/day

Ilike

Indonesia

16 guests40 m

$350/day

Mermaid I

Alor

15 guests28 m

$478/day

Mutiara Laut

Indonesia

14 guests46 m

$741/day

Neptune One

Indonesia

16 guests38 m

$332/day

Dewi Nusantara

Indonesia

18 guests57 m

$599/day