Biak Island
A Papuan island of raised coral with wartime caves, endemic birds and a site once chosen for a spaceport.
Updated 19 October 2026
Biak sits off the northern coast of Papua and is built of raised coral limestone, which gives it caves, cliffs and a shallow reef fringe. Goa Jepang, the Japanese cave near Biak town, is a memorial to those who died in it in 1944. The Padaido islands off the south-east have reef and wrecks. Biak's position almost on the equator made it a candidate for an Indonesian spaceport, proposed repeatedly since the 1980s and not built, and there are endemic birds including the Biak paradise kingfisher.
History
Europeans first sighted Biak in 1526, when the Portuguese navigator Jorge de Menezes was forced to winter here on a voyage from Malacca to Maluku, and Portuguese maps called it Ilha de Dom Jorge and later Ilha de S. Jorge. The Spanish navigator Álvaro de Saavedra sighted it on 24 June 1528 and Íñigo Ortiz de Retes in 1545, the archipelago appears on Portuguese charts from about 1537, and in older literature the island was also called Mysore Island (Wikipedia, Biak).
What's there
- Goa Jepang - the Japanese cave and its 1944 memorial near Biak town.
- Raised coral coast - caves, cliffs and reef fringe around the island.
- The Padaido islands - reef and wartime wrecks off the south-east.
- Endemic birds - including the Biak paradise kingfisher and others.
When to go
All year; calmer seas April to October. Three days.
Before you go
The wartime sites are graves as much as attractions - behave accordingly. Facilities are limited outside Biak town. Papua travel requires checking current entry requirements before flying.
Nearby
The Padaido islands are offshore; Cenderawasih Bay is south-west.
Key facts
Source: Wikidata, item Q855314, read on 18 October 2026.
What to pack for Biak Island
Chosen from what this place is for. Tap a kit for the full checklist.
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Head torch + spare batteries - Hands-free light is essential; caves are truly dark. Find on Amazon
- Quick-dry towel - A microfibre towel packs small and dries in minutes. Find on Amazon
- Grippy closed shoes - Cave floors are wet, muddy and slick with formations. Find on Amazon
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.



