- Where
- Southwest Papua, Indonesia;
c. 1,500 islands and shoals - Coordinates
- 0.50° S
130.50° E - Biome
- Coral Triangle reef & karst,
on the Indonesian Throughflow - The reef
- c. 553 hard coral species —
about 75% of the world's total - Status
- UNESCO Global Geopark; MPA
network; one nickel mine active - Best visited
- Roughly Oct–Apr for the
calmest seas and best visibility
Spent four days going everywhere by boat, including to breakfast. Put my face in the water on the first morning and was immediately outnumbered by more colours than I have names for, which I found humbling and also slightly rude of them. Wrote nothing at all for an entire afternoon, which is unlike me, and I am recording the fact of it here so that the notebook does not feel left out.
The short answer
Raja Ampat — "the Four Kings" — is an archipelago of around 1,500 islands, cays and shoals scattered off the north-western tip of New Guinea, in the Indonesian province of Southwest Papua. Its four main islands are Waigeo, Batanta, Salawati and Misool. It sits at the centre of the Coral Triangle and on the Indonesian Throughflow, the current that carries Pacific water into the Indian Ocean, and successive surveys have made it the most species-rich reef system yet recorded: about 553 species of hard coral, roughly three quarters of all those known to science, and more than 1,400 species of reef fish. It is a UNESCO Global Geopark, and it is also a nickel province. In June 2025 the Indonesian government revoked four of the five nickel mining permits in the islands. The fifth is still operating.
Why it's worth knowing
Biodiversity superlatives are usually soft. This one is unusually hard, because it has been counted repeatedly by different teams and the answer keeps coming back the same. A 2002 expedition by The Nature Conservancy and partners put confirmed hard corals at 505 species; later surveys raised it to 537 and then to around 553, with individual reefs carrying up to 280 species in a hectare. Reef fish went from 828 recorded on one trip to a regional total now generally given as over 1,400. On a single dive at Cape Kri, the ichthyologist Gerald Allen counted 374 species — a record for one dive anywhere. For comparison, 200 species at a site is the threshold that usually earns a reef the word "excellent".
The reason is position. Raja Ampat sits where the Pacific squeezes through into the Indian Ocean, in warm water, with a topography of sheltered bays, open ocean walls, mangrove and karst all within a few kilometres of each other — and, unlike most of the world's reefs, it has so far escaped mass bleaching on the scale seen elsewhere. Its coral colonies are old and large, which is itself a signal that the place has not been repeatedly flattened.
Which is what makes the second fact difficult. Nickel laterite forms in exactly this kind of tropical weathering environment, and Indonesia holds the world's largest nickel reserves and is its largest producer. The metal goes into stainless steel and into electric-vehicle batteries. The islands that make the reef what it is are the same islands with the ore in them, and the mining is on land while the damage is in the water — deforested slopes shed sediment, sediment reaches the reef, and coral does not tolerate being buried.
The field notes
Four permits revoked, one kept
In early June 2025 Greenpeace Indonesia published drone footage of nickel operations on small islands inside Raja Ampat; one clip passed fifteen million views. The organisation's assessment was that mining had cleared more than 500 hectares of forest and specialised native vegetation across Gag, Kawe and Manuran islands, with runoff producing turbidity and sedimentation in the surrounding water. Indonesian law is fairly direct on the point: Law No. 1 of 2014 on the management of coastal areas and small islands prohibits mining on islands of 2,000 square kilometres or less.
On 10 June 2025 the government revoked four of the five permits — those of PT Anugerah Surya Pratama, PT Kawei Sejahtera Mining, PT Mulia Raymond Perkasa and PT Nurham — with the energy and mineral resources minister, Bahlil Lahadalia, citing pollution, sedimentation and deforestation. It was one of the fastest responses to a public campaign in recent Indonesian memory. The fifth, PT Gag Nikel on Gag Island, was kept, on the stated grounds that it lies outside the geopark boundary, that no visible pollution was found, and that its deposit is economically significant. Gag Nikel is a subsidiary of the state-controlled miner Antam; its concession runs to roughly 130 square kilometres and it produced on the order of three million wet metric tonnes of ore in 2024. Gag Island is about 42 kilometres from Piaynemo, one of the most photographed viewpoints in the archipelago.
Then it kept moving. Operations at Gag were suspended pending an environmental audit and resumed in September 2025. On 31 July 2026, Greenpeace published a report citing a letter of 2 February 2026 from Indonesia's environment ministry which, it said, recorded that control of sedimentation, runoff and erosion at the mine was not optimal, identified continuing risk of sediment reaching coastal and marine waters in heavy rain, and found that biodiversity protection principles had not been applied. Antam's position is that the audit found no environmental violations and recommended operational improvements only. Both readings are of the same document, both are on the record, and the mining ministry said it was reviewing the findings. Nothing about this is resolved, and a reader planning a trip should expect the picture to have moved again.
How the counting works, and why the numbers move
Figures for Raja Ampat's diversity are quoted with a confidence the underlying surveys do not have, and it is worth knowing why they drift. Every number here is a cumulative total from expeditions that have not covered the whole archipelago, so each survey adds. Corals have gone 505, 537, 553 in successive tallies. Reef fish have gone 828 on one expedition, then 1,065, then 1,074, and are now given variously as over 1,400, over 1,600 or over 1,800 depending on the source and on whether the count is Raja Ampat alone or the wider Bird's Head Seascape. The peer-reviewed literature is the conservative end: over 550 hard corals and over 1,400 fish.
The percentage is steadier than the count. Around 75 per cent of the world's known hard coral species have been recorded here, a figure that holds across the WWF, Nature Conservancy and Conservation International summaries because it is the ratio of two numbers that grow together. This entry uses 553 corals and over 1,400 fish, names them as recorded totals rather than as an inventory, and treats the higher fish figures as plausible but not the ones to quote.
A carrying-capacity number nobody has to obey
A 2017 study by Konservasi Indonesia with the universities of Pattimura and Papua modelled how many visitors Raja Ampat could take without environmental harm and arrived at about 21,000 a year. Indonesian statistics agency figures put foreign arrivals at roughly 25,000 in 2024, with around 8,300 domestic visitors on top — a tenfold rise in foreign visitors since 2020 and, on the face of it, already past the modelled ceiling.
That figure is a research estimate, not a legal cap, and no permit system enforces it. What does exist is a mandatory entry permit whose proceeds fund the marine park rangers, a network of protected areas covering a substantial share of the archipelago, and sasi — a Papuan practice of temporarily closing an area or a species to harvest, agreed and lifted by the community, which predates all of the above and is still in force in many villages. Where a beach or a viewpoint asks for a small local contribution on top of the official fees, that is usually the community system, and it is not a scam.
- Get in the water before saying anything about the water.
- Learn the names people here use for their own islands, and use those.
- Ask before photographing anybody's home, and accept no for an answer.
- Sit on the front of a boat at the end of the day with no plan whatsoever.
- Attempt to count something. (Abandoned within a minute. Items two through five are what I did instead.)
A hand stencil on a sea cliff at Misool, sprayed in red ochre around somebody's fingers and still there. Ten rock art sites have been formally recorded in the karst of east and south Misool — Len Makana, Nu Tonton, Sun Bayo and Sun Malele among them — carrying hand stencils, sun and circle motifs, human figures and boats, and archaeologists read them within the Austronesian Painting Tradition found across island Southeast Asia. Their age has not been directly determined; the estimates in circulation, generally a few thousand years, come from stylistic comparison rather than from dating the pigment. You reach them by boat, from Yelu village with a local guide or on a liveaboard's itinerary, and they are on open cliff faces above the water rather than inside caves — which means that whoever made them was, like you, arriving from the sea.
Tally, in the marginSomebody put their hand flat against a wall above the sea and left it there for everyone afterwards — I held mine up beside it, at a respectful distance, and did not need to say anything else.
Getting there
The gateway is Sorong (airport code SOQ), on the New Guinea mainland, reached by domestic flights from Jakarta, Makassar or Manado; allow a night's margin, because eastern Indonesian connections slip. From Sorong harbour a fast ferry crosses to Waisai, the administrative town on Waigeo, in about two hours, with economy tickets from roughly IDR 137,000 and an air-conditioned class at around double that; departures have generally run at 09:00 and 14:00, but the timetable changes and should be confirmed locally. Resorts meet the ferry at Waisai with a speedboat; liveaboards board in Sorong itself. A small aircraft to Waisai is the faster and dearer alternative, with tight baggage limits.
Roughly October to April brings the calmest seas, the best visibility and the most dependable ferry schedules. Nothing here is drive-up: once you are in the islands, every movement is by boat, and the difference between a homestay on one island and a dive site on another is an hour of open water and a fuel bill.
Sort the permits and the money before you leave the mainland. Every visitor needs the marine park entry permit, locally called the PIN, and there is a separate visitor entry ticket; the fees fund the ranger patrols. Published amounts vary widely between sources and were revised for 2026, and as of August 2026 the park authority's online registration was unavailable while its website migrated to a new domain, which meant registering in person. Do not budget from a blog figure: confirm the current rate and the current payment route with your operator, and bring your passport. Bring cash too — ATMs exist only in Sorong and Waisai, and most homestays and small boat operators take nothing else. Liveaboards and resorts book out months ahead in season, and while they will usually arrange the permits, the fees are normally charged on top of the package rather than included in it. Dive insurance is worth having: this is a long way from a recompression chamber.
Common questions
How many coral species are there in Raja Ampat?
Around 553 species of hard coral have been recorded in Raja Ampat, Indonesia - about 75 per cent of all hard coral species known to science, and the highest total documented for any comparable area. The figure is a cumulative survey total that has risen with successive expeditions, from 505 species confirmed in 2002 to 537 and then 553, with individual reefs carrying up to 280 species per hectare.
Is nickel mining still happening in Raja Ampat?
Yes, at one site. Indonesia revoked four of the five nickel mining permits in Raja Ampat on 10 June 2025, citing pollution, sedimentation and deforestation. The fifth, PT Gag Nikel on Gag Island, was retained on the grounds that it sits outside the geopark boundary; it was suspended pending an environmental audit and resumed operating in September 2025. In July 2026 Greenpeace published a February 2026 environment ministry letter which it said identified continuing sedimentation risks, while the operator's parent company Antam states the audit found no violations.
Where is Raja Ampat, and does the Papua travel warning apply to it?
Raja Ampat lies off the north-western tip of New Guinea in Southwest Papua province (Papua Barat Daya), Indonesia. The United States travel advisory for Indonesia, reissued 7 July 2026, places the country at Level 2, exercise increased caution, and applies its Level 4 'do not travel' designation to two other provinces - Central Papua and Highland Papua - which lie in the island's interior and are not part of Raja Ampat.
Do you need a permit to visit Raja Ampat?
Yes. Every visitor to Raja Ampat must hold the marine park entry permit, known locally as the PIN, and a separate visitor entry ticket, with the proceeds funding ranger patrols across the marine protected areas. Published fee amounts differ between sources and were revised for 2026, and in August 2026 the park authority's online registration was unavailable during a migration to a new website, so travellers should confirm the current rate and payment route with their operator and carry a passport and cash.
How do you get to Raja Ampat?
Raja Ampat is reached through Sorong (SOQ) on the New Guinea mainland, served by domestic flights from Jakarta, Makassar and Manado. From Sorong harbour a fast ferry crosses to Waisai on Waigeo in about two hours, with economy fares from roughly IDR 137,000 and an air-conditioned class at around twice that; a small aircraft covers the same route in about thirty minutes with strict baggage limits. Once in the islands all movement is by boat, and resorts or liveaboards arrange transfers.
When is the best time to visit Raja Ampat?
Roughly October to April offers the calmest seas, the best underwater visibility and the most reliable ferry schedules in Raja Ampat. Liveaboards and the better resorts and homestays fill months in advance during that window. Manta ray sightings vary by site and season rather than following the same calendar, so a trip built around them is worth planning with an operator.
What is sasi in Raja Ampat?
Sasi is a traditional Papuan practice of temporarily closing an area or a particular species to harvesting, imposed and lifted by community decision, and it remains in force in many villages across Raja Ampat alongside the formal marine protected area network. Small contributions requested by communities at certain beaches and viewpoints usually belong to this local system and are separate from the official marine park entry permit.