About Saumlaki
Saumlaki, the capital of Yamdena island within the Tanimbar group, marks the southeastern entry point to the Forgotten Islands archipelago in the Banda Sea. This region is isolated even by Indonesian standards, separating the Banda Sea from the Arafura Sea and stretching over 1,000 kilometers towards West Papua. The remote location ensures largely undiscovered and pristine dive environments, characterized by extensive reefs and spectacular deep walls. The underwater topography predominantly features steep slopes and dramatic drop-offs that plunge into the deep, adorned with an abundance of soft corals, large sea fans, and giant sponges. Shallower areas showcase healthy hard coral gardens, teeming with vibrant reef fish. The volcanic arc geology of the wider Banda Sea contributes to nutrient-rich waters, supporting a diverse ecosystem. While the specific marine life of Saumlaki itself isn't detailed, the surrounding Forgotten Islands are known for schooling barracuda, trevally, and the consistent presence of hammerhead, silky, and grey reef sharks in the deeper sections. Marine creatures here appear curious, likely due to limited human interaction. Visibility in this area is typically excellent, and water temperatures remain warm throughout the dive season. As a departure or arrival port for liveaboard itineraries, Saumlaki offers access to some of Indonesia's most adventurous diving. Dives often involve current-swept conditions, especially on offshore seamounts and walls, making them suitable for experienced divers. Due to the vast distances between island groups, itineraries frequently include multi-day dives before overnight travel to the next location, with opportunities for night dives in sheltered bays when conditions permit.
Highlights
Season calendar
Sep – Nov (Sep–Nov)
Calmest seas and best visibility (25–30m). Hammerhead shark schools at their largest. Whale shark sightings increase. All liveaboard operators running Banda Sea expeditions.
Mar – May & Aug (Mar–May, Aug)
Transitional weather with generally good conditions. Visibility 18–25m. Fewer boats operating but still excellent diving.
Jun – Jul & Dec – Feb (Dec–Feb, Jun–Jul)
Monsoon brings rough seas, strong currents, and reduced visibility. Most operators do not run Banda Sea trips. Not recommended for diving.
Dive site facts: Saumlaki
- Current
- Moderate to strong
- Visibility
- Excellent
- Water temperature
- 27–30°C
- Entry
- Liveaboard tender / drift entry
- Level
- Advanced, comfortable with currents
- Dive type
- Wall, drift, pelagic, wide angle
- Night dive
- Possible in sheltered bays
- Region / port
- Banda Sea / Forgotten Islands
- Coordinates
- 7.9720° S, 131.2918° E
Conditions & Currents
Diving around Saumlaki and the Forgotten Islands frequently involves consistent currents, which are a defining characteristic of this remote region. While generally moderate across most sites, specific locations can experience stronger currents, especially on exposed walls and seamounts, attracting pelagic species. Liveaboard operators meticulously conduct current checks before each dive, providing up-to-the-minute briefings to ensure safe and enjoyable experiences, often planning dives to coincide with optimal conditions. The entry techniques can vary, but drift diving is common given the dynamic water movement. Visibility tends to be amazing, often enhanced by these currents, but divers should be prepared for potential thermoclines associated with upwellings, particularly during hammerhead season. Divers must demonstrate comfort and experience in current-swept conditions for these site
Marine life & sighting chances

Hammerhead shark
September-November, March-May · occasional
Silky shark
occasional
Grey reef shark
occasional
Barracuda
common
Giant trevally
common
Tuna
occasional
Spanish mackerel
occasional
Big grouper
common
Mobula ray
March-April, September-November · occasional
Turtle
common
Reef fish schools
common
Anthias
commonDive profile & how the dive runs
Dive profiles around Saumlaki and the Forgotten Islands typically involve boat entries to exposed walls or seamounts, with drift diving being a common technique to cover significant stretches of reef. Descend quickly onto the wall, which often slopes steeply into deep water, allowing for sightings of pelagic schools in the blue. Maintain an awareness of depth, as the walls can plunge to great depths, and manage gas consumption carefully in potentially strong currents. The route usually follows the wall, exploring overhangs and coral formations, with a focus on observing schooling fish and potential shark encounters in deeper sections. Ascend gradually along the reef slope, completing a safety stop in the shallower, current-protected areas where vibrant hard corals and reef fish are abundant. Given the distances and current potential, careful planning with your guide is essential for each dive.
Underwater photography
For wide-angle photography around Saumlaki, a fisheye or wide-angle lens is ideal to capture the expansive walls, immense soft coral gardens, and schools of barracuda or trevally. Given the excellent visibility, you'll have ample opportunity for grand reefscapes. Be prepared for potentially strong currents; good buoyancy and fins are crucial to maintain position for shots. For pelagic encounters like hammerheads, keep your camera ready for quick shots into the blue. Strobes are recommended to bring out the true colors of the corals and fish against the deep blue background. For macro opportunities, particularly for unusual critters that might be found in unexpected places, a macro lens and snooted lighting could yield unique shots, especially during night dives in sheltered bays.
Combine with nearby dive sites
- Dai
Island known for steep slopes, schooling barracuda, trevally, and large sea fans.
- Nil Desperandum Atoll
Large offshore reef with deep drop-offs, excellent fish life, and opportunities for schooling sharks.
- Nuslear
Part of the Terbang Islands, offering spectacular shallow coral gardens and steep drop-off walls.
- Nyata
Features a wall covered in huge sponges, transitioning into a deep, steep slope with diverse marine life.
- Terbang Islands
Known for pristine beaches extending to coral reefs and untouched walls, with abundant fish life.
Getting there & logistics
Saumlaki serves as a primary embarkation or disembarkation port for liveaboard cruises exploring the Forgotten Islands and the broader Banda Sea. International travelers typically fly into Jakarta (CGK) or Bali (DPS), then take domestic flights to Saumlaki's Olilit Airport (SXK). Trips originating or ending here often span 11 to 14 nights, covering vast distances across the archipelago. Liveaboards provide transfer services from the airport to the vessel. Due to the remote nature of the region, these itineraries are expedition-style, with significant travel between dive locations, frequently involving overnight journeys. Itineraries might combine Saumlaki with other Banda Sea highlights like the central Banda Islands or Ambon, sometimes as part of a longer 'Ring of Fire' crossing.
Safety & environment
Diving in the Saumlaki region and the Forgotten Islands involves unique safety considerations due to its extreme remoteness. The nearest recompression chamber is likely located in Ambon, which can be several days' travel by sea. Evacuation in a medical emergency would require complex logistics, typically involving liveaboard speedboats to the nearest airstrip and then onward air transport, which can be challenging and time-consuming. Comprehensive dive insurance, including emergency evacuation and medical coverage, is therefore not just recommended but essential. Site-specific hazards include potentially strong and unpredictable currents, requiring divers to be proficient in drift diving and maintain excellent buoyancy control. Always adhere to dive brief instructions, stay close to your guide, and carry signaling devices such as SMBs and whistles. Awareness of marine life, including potential encounters with larger pelagics, is also part of safe conduct.
Who it suits, and who it doesn't
Suited for
- Experienced divers comfortable with strong currents
- Photographers seeking wide-angle reefscapes and pelagic action
- Adventure seekers desiring remote, exploratory diving
- Divers interested in pelagic encounters, especially hammerheads
- Liveaboard enthusiasts who enjoy longer itineraries and significant travel
Less suited for
- Novice divers or those uncomfortable with currents
- Divers prone to seasickness on open ocean crossings
- Individuals with limited time for long liveaboard trips
- Divers seeking easy shore dives or minimal travel between sites
- Anyone without comprehensive dive accident insurance
FAQ
Saumlaki FAQ
What is the best time of year to dive around Saumlaki?
What kind of marine life can I expect to see in Saumlaki?
Are the currents strong around Saumlaki and the Forgotten Islands?
How do I get to Saumlaki for a liveaboard trip?
Is Saumlaki suitable for beginner divers?
Why dive Saumlaki from a liveaboard?
Saumlaki is one of Banda Sea's signature dive sites. A liveaboard sleeps you on the water and puts you in the water for three to four guided dives per day, including dawn and night dives that day-boat operators rarely offer. You skip the daily commute back to port and reach quieter, less-crowded sites in the same region on a single trip.
Below are the liveaboards that include Saumlaki on their Banda Sea itineraries.
Liveaboards diving Saumlaki
These liveaboards may visit Saumlaki on selected itineraries, the exact dive sites depend on departure, weather and conditions.

Wellenreng
Indonesia

Mari
Indonesia

Pindito
Indonesia

Mermaid II
Komodo, Indonesia

Gaia Love
Alor

Emperor Raja Laut
Raja Ampat, Indonesia

Malaillo
Indonesia

Damai II
Komodo, Indonesia

DUNE Aurora
Indonesia

Calico Jack
Indonesia

Coralia
Indonesia

Ilike
Indonesia
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