
Bikini Atoll
Marshall Islands · Pacific Islands & PNG
A UNESCO World Heritage Site, Bikini Atoll hosts an extraordinary fleet of WW2 warships transformed into artificial reefs, best dived from March through May when seas are calmest.
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
25 species across the dive sites here

Barrel Sponge
Seen year round
at USS Apogon

Bigeye Trevally
Seen year round
at USS Saratoga
Least concern

Blacktip Reef Shark
Seen year round
at Prinz Eugen
Vulnerable

Coral Encrusted Lionfish
Seen year round
at IJNS Nagato
Least concern

Coral Grouper
Seen year round
at Prinz Eugen
Least concern
Coral reef community
Seen year round
at Bikini Atoll

Coral Trout
Seen year round
at Japanese cruiser Sakawa
Least concern

Dogtooth Tuna
Seen year round
at Japanese cruiser Sakawa
Least concern
Encrusting Coral
Seen year round
at USS Apogon

Giant Clam
Seen year round
at USS Apogon
Critically endangered

Giant Grouper
Seen year round
at USS Saratoga

Giant Trevally
Seen year round
at Japanese cruiser Sakawa
Least concern

Grey Reef Shark
Seen year round
at USS Saratoga
Endangered

Humphead Wrasse
Seen year round
at IJNS Nagato
Endangered

Marbled Grouper
Seen year round
at Japanese cruiser Sakawa
Vulnerable
Reef fish
Seen year round
at Bikini Atoll

Sea Fan Feather Star
Seen year round
at Prinz Eugen

Spotted Eagle Ray
Seen year round
at USS Saratoga
Endangered

Bluefin Trevally
Seasonal visitor
at USS Apogon
Least concern

Cadlinella
Rare sighting
at USS Saratoga

Caramel Nudibranch
Rare sighting
at USS Saratoga

Dendrodoris guttata
Rare sighting
at IJNS Nagato

Goniobranchus verrieri
Rare sighting
at IJNS Nagato

Pustulose Wart Slug
Rare sighting
at USS Saratoga

Whitetip Reef Shark
Rare sighting
at USS Saratoga
Vulnerable
Dive sites

USS Saratoga
giant grouper · grey reef shark · bigeye trevally · spotted eagle ray

IJNS Nagato
whitetip reef shark · coral encrusted lionfish · humphead wrasse · pustulose wart slug

Prinz Eugen
blacktip reef shark · coral grouper · sea fan feather star · pustulose wart slug

USS Apogon
grey reef shark · whitetip reef shark · bigeye trevally · giant grouper

Japanese cruiser Sakawa
pustulose wart slug · whitetip reef shark · caramel nudibranch · grey reef shark

Bikini Atoll
whitetip reef shark · reef fish · coral reef community · pustulose wart slug