San Francisco Maru
Chuuk Lagoon · Federated States of Micronesia
The Million Dollar Wreck — a Japanese armed cargo ship sunk by USS Essex bombers during Operation Hailstone on 18 February 1944. Sits upright on the lagoon floor at 64 m with the bridge at 50 m and main deck at 50–55 m. Three Type 95 Ha-Go tanks remain lashed to the foredeck, holds packed with mines, bombs, artillery shells, trucks and aircraft parts. Deep, dark and intact — the ammunition is still live.
Conditions
Depth
42 to 64 m
Advanced depths
Current
Usually gentle
Can pick up on the edge
Visibility
15 to 25 m
Clearest in the calm season
Water
28 to 30°C
Tropical wetsuit
Month by month
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Water (°C) | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Vis (m) | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 |
| Current | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle | Gentle |
Your chances of seeing each animal
Whitetip reef shark
Last confirmed Apr 15, 2026 · 130 records
Almost always
Nearly every dive
Pacific Golden-Plover
Last confirmed Jun 28, 2026 · 16 records
Likely
About 6 in 10 dives
Micronesian Myzomela
Last confirmed Jun 28, 2026 · 15 records
Likely
About 6 in 10 dives
Grey reef shark
Expected
Known here, not yet in recent logs
Lionfish
Expected
Known here, not yet in recent logs
Peacock Damsel
Expected
Known here, not yet in recent logs
Bluefin Trevally
Expected
Known here, not yet in recent logs
Gear