Operation Hailstone genuinely sank dozens of Japanese ships across a single coordinated 1944 air raid, many still holding intact cargo — trucks, aircraft parts, ammunition, and personal belongings — preserved by the lagoon's calm, warm waters. That density and preservation is what makes Chuuk Lagoon a genuinely singular wreck-diving destination, unmatched in scale by almost anywhere else on Earth.
Weno City Intel
Why Chuuk Lagoon is world-famous: Operation Hailstone's 1944 raid genuinely sank dozens of Japanese ships in a single strike, many still preserved with intact cargo on the lagoon floor
A real underwater museum: Many wrecks still hold trucks, aircraft, ammunition, and personal effects, remarkably preserved by the lagoon's calm waters
Currency reality: Micronesia uses the US Dollar (USD)
Diving experience level needed: Many of the best-known wrecks genuinely require advanced or wreck-certified diving skills — check with operators before booking
How to actually get here: Weno is reached via the limited weekly United Airlines island-hopper flight route to Chuuk International Airport