Arguni

In the remote Fakfak Regency of West Papua, Indonesia, the small coastal settlement of Arguni sits at the edge of one of the least-explored marine environments on Earth. The waters of Arguni Bay, part of the Bird's Head Seascape — the global epicentre of coral reef biodiversity — harbour more species of coral and reef fish per square metre than any comparably studied area on the planet. This is the beating heart of the Coral Triangle, and Arguni is one of its most pristine and least-visited windows.

The character of Arguni is shaped by its extraordinary remoteness. The nearest city of any size — Fakfak — is itself remote by Indonesian standards, accessible only by small aircraft or long boat journeys. Arguni is further still, a settlement of modest wooden houses on stilts where the local Papuan community maintains a way of life centred on fishing, sago palm cultivation, and the gathering of forest products. The concept of tourism infrastructure does not exist here; this is a destination for expedition vessels and dedicated adventurers.

The marine biodiversity around Arguni is almost beyond comprehension. Marine surveys have documented over five hundred species of reef-building coral in the broader Bird's Head region — more than exist in the entire Caribbean. The reef fish diversity is correspondingly extraordinary: wobbegong sharks lie camouflaged on the reef floor, pygmy seahorses cling to sea fans with a dedication that suggests they know exactly how special they are, and walking sharks — epaulette sharks that "walk" across the reef using their pectoral fins — provide encounters that feel genuinely prehistoric.

Above the waterline, the forests of West Papua are among the most biodiverse on Earth. Birds of paradise — whose elaborate courtship displays inspired Alfred Russel Wallace to develop the theory of natural selection independently of Darwin — inhabit the canopy. The Wilson's bird of paradise, with its electric blue back and spiralling tail feathers, is found only in this region. Cuscus — marsupials related to Australian possums — move through the trees at night, their large eyes reflecting torchlight with an orange glow.

Arguni is accessible only by boat from Fakfak (several hours) or by expedition cruise vessels operating in the Raja Ampat and Bird's Head Seascape region. There are no facilities for visitors. The best time to visit is October through April, when the calmer seas of the transition season provide the best diving conditions and clearest visibility. Expedition cruises in this region are among the most exclusive and rewarding in global diving, attracting marine biologists and underwater photographers for whom Arguni represents the ultimate destination.