Dive Site: Pulau Hatta

About Pulau Hatta

Pulau Hatta, also known as Rosengain historically, is a key dive site within the central Banda Islands group, situated southeast of Banda Besar. This remote location in the Banda Sea offers spectacular wall dives, characterized by steep drops into oceanic depths where pelagic life thrives. The walls are richly encrusted with hard corals, gorgonians, and massive barrel sponges, making for breathtaking underwater landscapes. The diving experience here is primarily focused on oceanic encounters. The deep-water bathymetry of the Banda Sea, where dive sites rise from depths of 4,500 to 6,000 meters, means that Pulau Hatta acts as an isolated structure. This configuration draws pelagic schools and apex predators to feed along its edges, offering divers consistent opportunities to observe large marine animals. While the site is celebrated for its pelagics and extensive coral coverage, it is also part of an area known for good visibility and generally healthy reefs, benefiting from its remoteness and minimal human impact. Divers can expect to navigate along dramatic reef edges with deep water below and beside them, making it a quintessential Banda Sea dive. Liveaboards are the exclusive way to access Pulau Hatta, typically as part of a wider Banda Sea itinerary. The site often features as a highlight for its sheer walls, diverse corals, and the potential for schooling pelagic encounters, making it a compelling stop for experienced divers exploring this remote region.

Dive site facts: Pulau Hatta

Depth

5–40 m

Current

Moderate, can be strong

Visibility

20–40 m, up to 50 m

Water temperature

25–30 °C

Entry

Liveaboard tender / negative entry possible

Level

Intermediate–Advanced

Dive type

Wall, pelagic, coral garden

Region / port

Banda Sea, Maluku Province

Coordinates

4.6190° S, 130.0160° E

Conditions & Currents

Currents at Pulau Hatta are typically moderate, allowing for enjoyable dives suitable for various skill levels. However, as an exposed offshore island, currents can occasionally be strong, particularly on specific parts of the reef or during certain tidal phases. Divers should be prepared for potential drift dives, where the current carries the group along the wall, requiring good buoyancy control and comfort with blue water. Visibility is generally excellent, often exceeding 40 meters, but can fluctuate with plankton blooms that also attract pelagic life. Water temperatures are consistently warm, averaging 25-28°C, though thermoclines are possible at greater depths.

Marine life & sighting chances

Fusiliers

common

Trevally

occasional

Groupers

occasional

Triggerfish

occasional

Snappers

occasional

Butterflyfish

occasional

Eagle rays

occasional

Barracuda

occasional

Hammerhead sharks

September to November · occasional

Napoleon wrasse

common

Reef sharks

occasional

Tuna

occasional

Dive profile & how the dive runs

Dives at Pulau Hatta typically begin with a negative entry from a liveaboard tender, allowing quick descent to the reef wall. The profile usually involves exploring the sheer drops and slopes, adorned with vibrant hard and soft corals and impressive barrel sponges, between 5 and 40 meters. Divers often follow the reef edge, keeping an eye on the deep blue for pelagic activity such as schooling fusiliers, trevally, barracuda, and potentially hammerhead sharks during their seasonal appearance. Currents can be moderate to strong, making it suitable for drift diving along the extensive walls. The dive progresses along the wall, with guides leading the group to areas known for specific marine life or topography. The turning point is often dictated by air consumption or bottom time. Safety stops are conducted in the shallower sections of the wall, usually between 5-7 meters, offering opportunities to observe reef fish and macro life.

Underwater photography

Pulau Hatta is ideal for wide-angle photography, capturing the dramatic wall topography, vast coral gardens, and schools of pelagic fish. A wide-angle lens with external strobes will effectively illuminate the expansive scenes and vibrant colors. For hammerhead encounters, a wide-angle setup is essential for capturing their schooling behavior in the blue. Buoyancy control is paramount, especially when strong currents are present, to avoid damaging the delicate corals. When focusing on macro subjects like whip coral shrimps or pygmy seahorses, a macro lens and snoots can help isolate subjects against the colorful background. Always maintain a respectful distance from marine life and avoid disturbing the reef.

Combine with nearby dive sites

• Manuk Ridge

  Manuk Island, known as the "Snake Island," is an isolated, uninhabited volcanic island within Indonesia's Banda Sea, approximately 160…

• Nil Desperandum Atoll

  Nil Desperandum Atoll is an isolated seamount in the Banda Sea, part of the remote 'Forgotten Islands' chain.

• Koon

  Koon is a renowned dive site located in the eastern part of the Banda Sea, specifically within the remote Indonesian archipelago known for…

• Pulau Nusa

  Pulau Nusa is a remote dive site nestled within Indonesia's vast Banda Sea, forming part of the 'Forgotten Islands' region.

• Komba Island

  Komba Island, an active volcanic island located in the Banda Sea, sits approximately 50 kilometers north of Lembata Island in East Nusa…

• Penyu

  Penyu Islands, alongside Lucipara, are remote atolls located within the Forgotten Islands chain in the Banda Sea.

Getting there & logistics

Access to Pulau Hatta is exclusively via liveaboard, typically as part of a 10- to 14-night Banda Sea itinerary. Trips often start or end in Ambon, which is reached by domestic flights from major Indonesian hubs like Jakarta or Bali. Some itineraries may also connect through ports like Saumlaki, Sorong, Maumere, or Tual. Travelers may need to plan for a transit night in Indonesia before and/or after their liveaboard. There are no day boats or land-based dive resorts available for reaching this remote site, making a liveaboard the sole option. The region is known for its pristine conditions due to its remoteness and lack of mass tourism infrastructure.

Safety & environment

Diving at Pulau Hatta requires adherence to standard safety protocols, including insurance covering diving accidents and evacuation. The nearest recompression chambers are located in more developed areas of Indonesia, which can be several days' travel from the remote Banda Sea. Evacuation in this region is complex and can be lengthy, often involving liveaboard support and onward air travel, underscoring the importance of comprehensive medical and travel insurance. Site-specific hazards include potentially strong currents and deep dive profiles, requiring advanced diving skills and diligent gas management. Divers should always follow dive guide instructions, maintain excellent buoyancy, and avoid contact with the reef to prevent injury and protect the marine environment.

Who it suits — and who it doesn't

FAQ

Pulau Hatta FAQ

Liveaboards diving Pulau Hatta

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

Wellenreng

Indonesia

9 guests25 m

$427/day

Mari

Indonesia

14 guests32.2 m

$328/day

Pindito

Indonesia

16 guests37.79 m

$533/day

Mermaid II

Komodo, Indonesia

18 guests

$355/day

Gaia Love

Alor

20 guests

$554/day

Emperor Raja Laut

Raja Ampat, Indonesia

12 guests31 m

$482/day

Malaillo

Indonesia

14 guests45.57 m

$348/day

Damai II

Komodo, Indonesia

14 guests

$459/day

DUNE Aurora

Indonesia

18 guests

$344/day

Calico Jack

Indonesia

10 guests30 m

$398/day

Coralia

Indonesia

16 guests48 m

$547/day

Ilike

Indonesia

16 guests40 m

$298/day