Pulau Biak lies in Cenderawasih Bay off the north coast of Papua, Indonesia. The island is the principal part of Biak Numfor Regency and is known for limestone shores, clear tropical water, coral environments and layers of Pacific wartime history. Biak town is the usual arrival point and the practical base for reaching beaches, caves, villages and smaller offshore islands.
A visit can include coastal swimming and snorkelling, local markets, cave or memorial sites connected with the Second World War, and boat trips arranged with experienced local operators. Conditions away from the main town can be basic, which is part of the island's appeal but requires preparation. Reefs and coastal ecosystems are sensitive, so visitors should avoid touching coral, collecting shells or leaving waste behind. Plan more time than the map alone suggests: road and boat journeys may depend on weather, fuel and local availability. Carry cash, drinking water, sun and rain protection, and ask locally before entering village land or culturally significant sites. Confirm boat safety equipment, tides, current access rules and onward transport before each excursion.