Apra Harbor
Guam · Central Guam
Guam’s main harbor holds some of the Pacific’s most accessible wreck diving, including WWII Japanese and American vessels.
How this reef is doing
ⓘ How we measure thisReef state
Live science signals for this reef are still being gathered.
Coral cover
Fish life
Heat
Fishing
Open to fishing, and the water is fairly quiet.
Sources · Global Fishing Watch and reef gravity
What you will see
10 species across the dive sites here
Green sea turtle
Seen 3 months ago
at Tokai Maru & SMS Cormoran Twin Wrecks
Least concern
Blacktip reef shark
Seen 4 months ago
at Tokai Maru & SMS Cormoran Twin Wrecks
Vulnerable
Porites coral
Seen 6 months ago
at Tokai Maru & SMS Cormoran Twin Wrecks
Least concern
Giant trevally
Seen Mar 2025
at Tokai Maru & SMS Cormoran Twin Wrecks
Least concern
Bluefin trevally
Seen year round
at Piti Bomb Holes Marine Preserve
Least concern
Forsten's parrotfish
Seen year round
at Tokai Maru & SMS Cormoran Twin Wrecks
Least concern
Great barracuda
Seen year round
at Tokai Maru & SMS Cormoran Twin Wrecks
Least concern
Hard coral
Seen year round
at Piti Bomb Holes Marine Preserve
Hawksbill turtle
Seen year round
at Piti Bomb Holes Marine Preserve
Critically endangered
Yellow goatfish
Seen year round
at Piti Bomb Holes Marine Preserve