Irian Jaya Liveaboard Diving

Irian Jaya was the official name for the Indonesian half of the island of New Guinea from 1973 until 2002, when it was renamed Papua (and later split into multiple provinces). The name still appears in older travel and dive literature referring to what is now Papua and West Papua, including Raja Ampat.

Yes — Papua is the current name for the region formerly called Irian Jaya, Indonesia's western half of the island of New Guinea. The renaming took effect in 2002, though 'Irian Jaya' still appears on some older maps, in books, and on websites.

The region now called Papua, formerly Irian Jaya, is home to hundreds of distinct indigenous groups and languages, among the most linguistically diverse areas on Earth. Many communities maintain traditional customs alongside a growing tourism economy centered on Raja Ampat's diving and birdwatching.

The Indonesian province officially changed its name from Irian Jaya to Papua in 2002, aligning it with the name used for the broader island and its indigenous identity. The older name still surfaces in dive guides, maps, and travel literature printed before the change. Today, "Papua" is the name used in current maps and travel planning.

Modern Papua is best known among divers for Raja Ampat, Cenderawasih Bay, and Triton Bay — three destinations that place it at the heart of the Coral Triangle's most biodiverse waters. It's part of Indonesia's far eastern reaches, bordering the independent country of Papua New Guinea. The region attracts serious dive travelers rather than casual tourists, given its remoteness.

The area once known as Irian Jaya now encompasses Raja Ampat's reefs, the whale shark encounters of Cenderawasih Bay, and the biodiverse waters of Triton Bay in the Kaimana regency. Each offers a distinct diving style, from Raja Ampat's dramatic biodiversity to Cenderawasih's in-water whale shark interactions. Together, they represent some of the least-crowded, highest-biodiversity diving anywhere in Indonesia.

Yes — Raja Ampat sits off the Bird's Head Peninsula in what is now Papua province, the same territory that was called Irian Jaya until 2002. It's the most famous destination in this broader region. Most travelers today simply refer to it by name rather than by the province's former designation.

The Bird's Head Seascape is the name given to the marine region covering the western tip of Papua's peninsula, including Raja Ampat, Cenderawasih Bay, and Triton Bay. It's considered part of the most biodiverse marine environment on Earth, sitting at the heart of the Coral Triangle. The name reflects the peninsula's shape on a map, resembling a bird's head.

Yes — Cenderawasih Bay, Indonesia's largest marine national park, is known for in-water encounters with whale sharks that gather around traditional fishing platforms called bagans. Unlike many whale shark destinations tied to a narrow seasonal window, sightings here happen largely year-round. It's considered one of the more reliable places in the world to snorkel or dive alongside them.

Triton Bay, in West Papua's Kaimana Regency, gained attention after a 2006 Conservation International survey recorded exceptional coral and fish biodiversity there. It's also known for sightings of walking (epaulet) sharks, which use their fins to move across the reef. Conditions tend to be calmer than the more current-driven diving found in Raja Ampat.

Access typically starts with a flight to a regional hub such as Sorong for Raja Ampat or Manokwari for Cenderawasih Bay, followed by a boat transfer or liveaboard connection. Given the province's remoteness, multi-leg travel is the norm rather than the exception. Trip planning usually allows extra buffer days for these connections.

Papua lies at the core of the Coral Triangle, the global center of marine biodiversity, and its position at the convergence of major ocean currents helps explain the exceptional fish and coral counts recorded in Raja Ampat, Triton Bay, and neighboring waters. Surveys in the region have repeatedly documented some of the highest reef biodiversity figures found anywhere on the planet. It's this concentration of species, more than any single site, that defines the region's reputation.

Largely yes, in terms of geography — older guides and maps labeled "Irian Jaya" describe the same physical destinations known today as Papua, including Raja Ampat and Cenderawasih Bay. The name itself is outdated, but the underlying dive sites and logistics have simply been rebranded under the current provincial name. Travelers occasionally still see the old name pop up in dated resources.

Papua is an Indonesian province occupying the western half of the island of New Guinea, while Papua New Guinea is a separate, independent country occupying the eastern half. The two share the same island but have different governments, currencies, and travel requirements. Divers researching the region should double-check which side of the border a given destination falls on.

Indonesia's general dry season, roughly April through October, tends to bring the calmest conditions for most of Papua's dive regions (as of 2026). Cenderawasih Bay's whale shark encounters are more of a year-round exception, tied to fishing activity rather than seasonal weather. Specific destinations within the province can have their own local variations worth checking before booking.