Raja Ampat is a 40,000 km² archipelago off West Papua, Indonesia, containing more than 550 coral species (representing ~75% of all known coral species) and over 1,427 reef fish species — the highest marine biodiversity density recorded on Earth. Its nine marine protected areas covering 1.9 million hectares protect abundant manta rays, endemic walking sharks, and some of the most intact coral reefs remaining in the Coral Triangle.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Raja Ampat comprises over 1,500 islands surrounding the four main islands of Waigeo, Batanta, Salawati, and Misool at the northwestern tip of New Guinea's Bird's Head Peninsula. Marine surveys beginning in 2001 by Conservation International and The Nature Conservancy (led by ichthyologist Dr. Gerald Allen) established Raja Ampat as the global epicentre of coral reef biodiversity, with the Cape Kri dive site holding a world record of 374 fish species observed on a single dive. The region hosts a thriving population of reef manta rays (Mobula alfredi) — the largest documented in Indonesia, with 1,375 individuals recorded over 15 years and annual population growth averaging 3.9–10.7% across sub-regions — attributed to comprehensive MPA protection and a 2012 shark-and-ray sanctuary decree. Diving is possible year-round but conditions peak October through April when dry weather brings visibility above 20 m and manta aggregations peak at cleaning stations in the Dampier Strait. All visitors must purchase a Marine Park Entry Permit (IDR 700,000, valid 12 months) and a single-visit Visitor Entry Ticket (IDR 1,000,000) at Waisai or Sorong before entering protected waters.
Highlights
What makes this dive worth the trip.
Cape Kri in the Dampier Strait holds the world record for fish species counted on a single dive: 374 species documented by marine biologist Dr. Gerald Allen (Conservation International/LIPI surveys, 2001 onward).
Raja Ampat's reef manta ray (Mobula alfredi) population is the largest reported from Indonesia — 1,375 individuals photo-identified over 15 years — with annual growth rates of 3.9% (Dampier Strait) and 10.7% (Misool), documented in a peer-reviewed 2022 study in Frontiers in Marine Science.
The region contains at least 488–550 coral species, representing approximately 75% of all known coral species worldwide, across fringing, barrier, patch, and atoll reefs within the 13,550 km² conservation network.
Marine life
37 species you’re likely to encounter on a dive here.
Dive sites
7 signature sites at this destination.
Boo Windows
A small island with two natural swim-through 'windows' eroded into the limestone, located in the Boo Islands group in southern Misool. The site is iconic for underwater photography: divers swim through the arches with reef and blue water as a backdrop. The surrounding reef supports schools of sweepers and glassfish, scorpionfish and lionfish in crevices, sweetlips, wobbegong sharks at rest, and both Bargibant's and Denise's pygmy seahorses on gorgonians. Mandarin fish perform their sunset display in the shallows.
5–25 mbeginnerLiveaboardLightVisibility 20–30 m
Cape Kri
A sloping reef at the northern tip of Kri Island in the Dampier Strait, where two tidal systems converge and produce nutrient-rich upwellings. Dr. Gerald Allen (Conservation International) counted 374 fish species here during a single 90-minute dive — the highest single-site fish diversity record globally. The site features steep slopes from about 3 m down to 40 m with large schools of fusiliers, trevally, and barracuda, resident blacktip and whitetip reef sharks, tasselled wobbegong sharks resting under coral plates, and Denise's pygmy seahorses on gorgonian fans.
3–40 mintermediateDay boatStrongVisibility 15–30 m
Manta Sandy
A shallow sand-slope site southeast of Arborek Island in the Dampier Strait, with several coral bommies leading down to a series of cleaning stations at about 16 m where manta rays queue for cleaner wrasse. Up to 20 mantas have been observed in a single session; the population includes black melanistic reef mantas (~40% of the local population) alongside standard reef and oceanic individuals. The Raja Ampat MPA authority has marked the cleaning-station boundary with a rock line at approximately 16 m to guide diver positioning.
2–18 mbeginnerDay boatLightVisibility 15–30 m
Blue Magic
A submerged pinnacle rising from around 30 m to approximately 7 m in the eastern Dampier Strait between Kri and Waigeo islands. Strong oceanic currents make this one of Raja Ampat's most pelagic-rich sites, with oceanic manta rays aggregating here December–March, multiple reef shark species patrolling the pinnacle, and large schools of giant trevally and barracuda. Several cleaning stations attract mantas throughout the dry season. Best dived during slack tide; current direction reversal can be unpredictable.
8–30 madvancedDay boatStrongVisibility 15–30 m
Melissa's Garden
A dense, oval coral garden in the Fam Islands of northern Raja Ampat, consistently cited by dive operators as one of the most impressive hard and soft coral assemblages in the archipelago. The reef crest sits at 5–7 m (also suitable for snorkelling) and the slope continues to 25–40 m. Hard and soft corals compete for space across the entire reef, sheltering diverse reef fish, anthias, damselfish, and dottybacks, along with macro subjects including pygmy seahorses, nudibranchs, ghost pipefish, and three endemic shark species — zebra shark, wobbegong, and Raja Ampat epaulette shark.
5–30 mbeginnerLiveaboardLightVisibility 15–30 m
Magic Mountain (Shadow Reef)
A large submerged seamount in the Misool area of southern Raja Ampat, southeast of Warakaraket Island. The pinnacle reaches to approximately 6 m below the surface and drops steeply. Notably, both oceanic (Mobula birostris) and reef (M. alfredi) mantas use the cleaning stations here, including melanistic black individuals that represent around 40% of the Raja Ampat ray population — a proportion found in only two places globally (Raja Ampat and Ecuador). The site also produces schools of yellow snapper, batfish, large grouper, occasional wobbegong and epaulette walking sharks, and friendly humphead wrasse.
6–30 mintermediateLiveaboardModerateVisibility 15–30 m
Arborek Jetty
A wooden jetty beside Arborek village on a small island in the Dampier Strait, accessible in around 40 minutes from central diving areas. Divers descend into a forest of hard corals and giant clams beneath the jetty structure, with schooling batfish and sweetlips forming dramatic columns in dappled light — a favourite subject for wide-angle photography. Current through the jetty can be significant. Also popular as a night dive for macro life.
2–18 mintermediateDay boatStrongVisibility 10–25 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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