Rabaul
Papua New Guinea · Pacific Islands & PNG
Rabaul sits inside a volcanic caldera on the northeastern tip of New Britain, where a sheltered harbor holds one of the Pacific's most dramatic collections of WWII Japanese shipwrecks. The combination of vivid coral growth on intact wartime cargo and the backdrop of smoking volcanoes makes this a singular destination for wreck divers.
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
20 species across the dive sites here
Spine-Cheek Clownfish
Seen 4 months ago
at Sanko Maru
Least concern
Moorish Idol
Seen 4 months ago
at Manko Maru
Least concern
Clark'S Anemonefish
Seen 4 months ago
at Sanko Maru
Least concern
Lionfish
Seen Jul 2025
at Sanko Maru
Least concern
Whitetip Reef Shark
Seen Jul 2025
at Hakkai Maru
Vulnerable
Reef Stonefish
Seen Jul 2025
at Sanko Maru
Least concern
Banded Sea Krait
Seen year round
at Keiten Maru
Least concern
Batfish
Seen year round
at Sanko Maru
Least concern
Bigeye Trevally
Seen year round
at Hakkai Maru
Least concern
Blacktip Reef Shark
Seen year round
at Manko Maru
Vulnerable
Giant Moray
Seen year round
at Keiten Maru
Least concern
Glassfish
Seen year round
at Sanko Maru
Least concern
Green Sea Turtle
Seen year round
at Manko Maru
Least concern
Lyretail Anthias
Seen year round
at Keiten Maru
Least concern
Napoleon Wrasse
Seen year round
at Hakkai Maru
Endangered
Nudibranch (Variable)
Seen year round
at Manko Maru
Sea Fan
Seen year round
at Hakkai Maru
Yellowfin Trevally
Seen year round
at Sanko Maru
Least concern
Oceanic Triggerfish
Seasonal visitor
at Keiten Maru
Least concern
Blackspotted Puffer
Rare sighting
at Sanko Maru
Least concern
Dive sites
Sanko Maru
lionfish · batfish · yellowfin trevally · glassfish
Manko Maru
green sea turtle · nudibranch (variable) · blacktip reef shark · moorish idol
Keiten Maru
lyretail anthias · giant moray · oceanic triggerfish · banded sea krait
Hakkai Maru
whitetip reef shark · napoleon wrasse · sea fan · bigeye trevally