Diving in Alor: a complete guide

Alor is one of Indonesia’s most pristine and diverse islands. Located in the province of East Nusa Tenggara, it is known for its rugged landscapes, traditional villages and an underwater world that is among the best in Asia. Despite its exceptional biodiversity, Alor is relatively unknown to the general public, giving you the feeling of being really far away from the crowd. In this blog, we tell you all about Alor as a diving destination.

General information about Alor

The island is part of the Alor Archipelago, a group of seventeen islands where ancient cultures, volcanic mountains and crystal clear waters converge. The currents around Alor bring nutrient-rich water to the reefs, making the dive sites there especially healthy and colorful. At the same time, the island above water offers a peaceful, authentic atmosphere with friendly locals, traditional weaving and unique coastal landscapes.

Location: eastern Nusa Tenggara, east of Flores and near Timor-Leste
Surface area: about 2,000 km²
Population: about 200,000 inhabitants

Alor is often compared to other relatively remote and pristine diving destinations in Indonesia, where both spectacular walls and rich macro-life can be found. The most comparable spots are:

Komodo: Like Alor, Komodo has a combination of steep walls, strong currents and colorful reefs. Both destinations are relatively quiet, far from mass tourism, and offer opportunities for big game such as manta rays. Perhaps the biggest difference is that Komodo is slightly more accessible and touristy than Alor.
Raja Ampat: Also, Alor is sometimes compared to Raja Ampat. It’s very different overwater here, but both places have immense biodiversity and pristine reefs.
Lembeh / North Sulawesi: especially for muck-diving and spotting rare critters, Lembeh is comparable.

Why dive in Alor?

Diving in Alor is an experience you won’t find anywhere else in Indonesia in the same way. The reefs around the island are remarkably pristine, precisely because Alor is still relatively little visited. Hard and soft corals are still in excellent condition here, giving each dive a colorful and vibrant character. Thanks to its location in an area where several sea currents converge, its biodiversity is exceptionally high. You will find a rare mix of macro life – such as frogfish, harlequin ghost whales and seahorses – as well as impressive steep walls full of schools of fish.

The variation in diving conditions also makes Alor unique. Some sites have powerful currents that bring in nutrient-rich water and provide vibrant reef life. Other dive sites, on the other hand, are calm and perfect for exploring the underwater world in serenity. This combination makes the area attractive to experienced divers as well as those who enjoy relaxed diving.

Alor is additionally known as a destination where you can regularly encounter big stuff. Depending on the season, you can spot manta rays, reef sharks, hammerheads, dolphins and even mola mola here. There is also the whale migration, where you have the chance to encounter the giants of the sea. Between dives you will discover an island that is at least as fascinating in terms of culture as the underwater world. The locals are known for their friendliness, traditional villages and unique weavings. And above all, you dive here far away from mass tourism. No crowded boats, no overcrowded dive sites – just peace, nature and pure Indonesia.

Best travel time for diving in Alor

The best time to dive in Alor is from April to November, during the dry season. During these months, weather conditions are generally stable, with little rain, calm seas and excellent diving conditions.

Visibility: Underwater visibility is optimal during this period, often between 20 and 40 meters at the steep walls and around 15-25 meters at the popular muck diving sites. During the rainy season (December-March), visibility may decrease slightly due to additional sediment, but most dive sites remain excellent for both macro and wreck diving.

Water temperature: The water is pleasantly warm, averaging 27-29°C. In shallower areas or with stronger currents, it can feel slightly cooler, but usually a 3 mm wetsuit is sufficient for comfort during dives.

Currents: Currents are present around Alor, but vary by dive site. Many walls have mild to moderate currents, ideal for drift diving and observing pelagic species. The muck dive sites are often virtually current-free, perfect for macro photography and spotting rare critters.

Period	Diving conditions	Wetsuit Advice	Details
March – May	Good visibility (20-35 m at walls, 15-20 m at muck dive sites), calm sea, mild currents	3 mm full or shorty	Early dry season, ideal diving conditions, healthy reefs, comfortably warm water (27-29°C)
June – September	Excellent visibility (20-40 m), stable weather, current mostly mild to moderate	3 mm full or shorty	High season for diving, perfect drift diving at walls, macro diving at muck locations excellent. Whales often migrate along the coast from June to August, extra chance of spotting whales and dolphins
October – November	Good visibility (20-35 m), occasional increased wind and waves, current slightly variable	3 mm full	End of dry season, slightly higher chance of rain showers, still ideal for all types of diving
December – February	Visibility may decrease slightly (15-25 m), current mild	3 mm full	Rainy season, sea can be rougher, fewer tourists, some dive sites a little murkier, but macro and muck diving remain excellent

Where to dive on Alor?

Alor’s underwater landscape offers incredible variety: deep, vertical walls, coral-covered slopes, volcanic structures, black sand mass and strong currents full of pelagic life. All dive sites are located in Pantar Strait, the channel between Alor and the Pantar Islands, where two volcanic islands – Pura and Ternate – rise out of the sea. These islands and the unique geography of the Strait form one of Indonesia’s richest marine environments. Here is an overview of some great dive sites.

Panther Island (near Pura)

Some of the most iconic spots in Alor are located here:

Bama Wall
An impressive vertical wall that descends to about 90 meters.
Divers often spot pelagic species swimming along the blue water.
Bakalang Jetty
A perfect macro dive with 15-meter high pillars completely covered with coral. A great place for angler fish, ghost whistle fish, nudibranchs and many other critters.
Yellow Corner (Monaseli)
The most famous spot for schools of scalloped hammerhead sharks. The maximum depth is about 32 meters and the current can be very strong – you must be fit enough to swim briefly against the current to reach the “corner.” Once there, you hook up with reef hooks and wait for hammerhead sharks to appear in the blue. In addition to hammerhead sharks, you will also find white tip sharks, black tip sharks, gray reefs, silky sharks, as well as mobulas, eagle rays, marble rays and sometimes oceanic manta rays. In strong currents, schools of fish gather along the edge, creating spectacular scenes.

Pulau Ternate

A volcanic island with dramatic and steep walls, ideal for relaxed drift diving, going with the current. The coral here is exceptionally healthy, full of soft and hard coral formations. You drift past schools of reef fish, beautiful sea fans, sponges and the occasional macro creatures hiding in crevices. It is also common to see larger marine life passing by in blue. Visibility is often excellent, up to 30-35 meters.

Pulau Pura

Pura offers a diverse range of environments: rolling coral reefs, patches of black sand and rock walls.
In this area, you are more likely to encounter large animals, including reef sharks, thresher sharks and occasionally even hammerhead sharks.
The currents around Pura tend to be stronger, making many dives exciting, sometimes fast drifts.
The coral is world-class: very healthy, colorful and full of fish, with dense schools swirling along the slopes.

South Alor

An area for divers who enjoy strong currents and adrenaline-packed drifts. Along Pulau Alor are some seven dive sites with walls, slopes and two sites with swim-throughs. The currents here can be extremely powerful, turning the underwater topography into unique formations. The marine life is abundant – large schools of fish, sharks and tuna – and during the cooler months (20-25°C) there is a chance to see Mola Mola.

Kalabahi Bay

A 10-km-long bay leading inland to the capital city of Alor. The north shore of the bay is a macrophotographer’s paradise, with black volcanic sand and poor visibility – perfect for spotting rare and unusual creatures.

Highlights include:

Rhinopias (weedy scorpion fish) in various colors
All types of angler fishing
Many species of pipefish
Octopuses: wonderpus, blue-ring octopus, mimic and even reports of hairy octopuses
Shrimp: harlequin, spiny tiger, Donald Duck, hairy shrimp and more
An incredible variety of slugs

Expect to discover something new with every dive; it is a macro photographer’s paradise.

Moko House Reef

This is the house reef of one of the resorts on Alor. It is an easy and very beautiful dive, suitable for all levels. It has a gradual slope from 3 to 20 meters, before changing to a sandy bottom to about 35 meters.
Highlights include:

Very healthy coral and rich fish life – like diving into an aquarium
Nesting hawksbill turtles (mostly shy)
Blacktip reef sharks of about 15 meters
Excellent macro shots, both day and night: ornamental crabs, pipefish, seahorses, shrimp, octopus and regular wonder pools in the shallows.

During sunset and low tide, divers can explore the tide pools with a flashlight and often spot small critters hiding in the sand or rocks.

Marine life in Alor: what to expect during your dive?

It is bursting with life underwater and you can expect a good mix of macro life and large pelagic species. Below is an overview of some species, but it is not a complete list: there is much more to discover.

Large & marine mammals

Bottlenose dolphins
Spinner dolphins
Sperm whale (whale)
Pgymee blue whale
Orcas
Mantas
Turtles (green, hawksbill)
Dugong (sea cow)

Pelagics & predatory fish

Reef Sharks
Hammerheads
Fox Sharks
Mola mola
Tuna
Jacks
Barracuda
Napoleons (Maori wrasse)

Reefs & coral

Soft corals
Hard coral gardens
Fan corals
Sponge formations and coral mounds

Reef fish & schools

Fusiliers in massive clouds
Snappers
Anthias carpets
Butterflyfish
Triggerfish
Sweetlips & groupers
Misses & clownfish

Marco & muck

Flamboyant cuttlefish
Harlequin shrimp
Pygmy seahorses
Ghost pipefish
Frogfish
Blue spotted octopus
Wonderpus
Rare crabs

Seasonal

Whales (June – November)
High fish activity due to strong currents
Chances of unexpected on-water encounters such as orcas, sperm whales and blue whales

Who is Alor a good destination for?

Basically, Alor is suitable for any level, provided that as a beginner you avoid the dives with strong currents. If you really want to get the most out of the trip and the dives, we recommend you to be at least advanced open water certified and have 50 logged dives. That way you can participate in all dives and you will be able to make them in a relaxed way.

Although there is plenty of macro and muck to be found, we don’t think it is the most suitable destination for underwater photographers. There are certainly some dives where you have a lot of storming: where you first have to swim against the current or where you make a drift dive with the current. For a photographer, of course, this is not ideal. If you do want to go there with your camera, it is best to coordinate with the diving school in advance. That way you might be able to do just the muck dives.

What diving equipment do you need in Alor?

For diving in Alor, you do not need any specific equipment, as underwater conditions are relatively calm. However, it is important to know what you need. Here is a list of the most common scuba diving equipment for Alor.

Basic equipment

Wetsuit: The water averages between 27-29°C, so a 3mm shorty or 3mm full suit will do. Unless you are a cold weather fan, then you can bring a 5mm.
Mask & snorkel: A well-fitting proprietary mask is recommended for optimal vision and comfort. The snorkel is especially useful when waiting for the boat.
Fins: In Alor it is also possible to make shore dives. So in that case it is nice to have open heel fins with booties. By the way, it is always nice if you have to walk across the beach to the boat for protection of your feet.
Dive computer: Highly recommended for safe diving and to keep a good record of your dive profile, especially if you make several dives a day.
BCD & regulator: You can often rent fine at local dive centers, but own equipment always gives comfort.

Additional accessories

Underwater camera: The visibility in Alor is fantastic and you are guaranteed to see unusual animals. Given the dives with currents, you will be able to capture the best footage with a GoPro or other action camera. Keep in mind that with these types of cameras it is harder to capture small life well, these cameras have trouble focusing.
Diving lamp: Not necessary, but can be nice when looking for small life. Keep in mind, of course, that you are not shining animals right in the eyes.
Reef hook: For some dives, you need a reef hook to attach you to the reef.
Weights: You don’t need to bring this, of course, but it’s good to know. Because of the warm water, you often need less lead than in colder waters.
Diving gloves and boots: Not necessary due to the soft coral and warm water, but boots can be nice for comfort.
Dry bag: Since they are also boat dives, it is convenient to bring a dry bag for valuables. A dry bag is specially designed to keep belongings dry during boat trips. They are often made of sturdy, waterproof material with a roll-up closure at the top to keep water out.

Diving in Alor with EWDR

We currently have 1 sample trip on our website to Alor, to give you an idea of what such a trip might look like. Since it is a destination that requires some travel, we recommend a minimum of 2 weeks in that direction. 3 weeks is actually even better, so you can make a nice change between diving and exploring the island above water. All our trips are customized, so you can make the trip the way you want.

In addition, we also have a group trip to Alor. Robbert is going there with a group in September 2026 . It is a 2-week trip, during which you will dive for 8 days. Every day there will be 2 boat dives in the morning and after lunch the group goes into the water together on the house reef. In fact, there is unlimited diving from the spectacular house reef. On the last day, whale watching is on the schedule: looking for sperm whales and blue whales!