71 dive sites in Guam, United States: 13 reefs, 7 shore dives, 6 walls, 2 caves, 2 wrecks, 1 artificial reef, 1 pinnacle and 39 other sites.
Recorded maximum depths range from 20 m to 33 m (3 of 71 sites have a depth).
By level: 3 beginner and 3 advanced.