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  4. Guam
  5. Guam (Blue Hole)

Guam (Blue Hole)

Sinkhole/Cave
Depth: 5–40 mLevel: Advanced Open WaterAll year round
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A vertical sinkhole connected to the sea by an underwater tunnel, one of Guam's most iconic dive sites.

Depth

5–40 m

Recommended level

Advanced Open Water

Average visibility

25 m

A vertical sinkhole connected to the sea by an underwater tunnel, one of Guam's most iconic dive sites.

Location

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Guam (Blue Hole): 43 documented species

Ecosystem

Cave / cenote

Similar dive sites

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Same country: Guam

Same country: Guam

Same country: Guam

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Water temperature

28 °C

Current

Weak to moderate

Access

Shore/Boat

Best season

All year round

Recommended certification

Advanced Open Water

Approx. price

55 USD / dive

Plan your dive

Best season
All year round
Approx. price
55 USD / dive
See location

Same country: Guam

Guam · Micronesia
See on the interactive map→
Giant ClamCritically Endangered

Giant Clam

Tridacna gigas

Giant AnemoneNot Evaluated

Giant Anemone

Stichodactyla gigantea

Disc AnemoneNot Evaluated

Disc Anemone

Discosoma nummiforme

Ritteri AnemoneNot Evaluated

Ritteri Anemone

Heteractis magnifica

Spotted Garden EelLeast Concern

Spotted Garden Eel

Heteroconger hassi

Harlequin Snake EelLeast Concern

Harlequin Snake Eel

Myrichthys colubrinus

Warty SlugNot Evaluated

Warty Slug

Onchidium verruculatum

Great BarracudaLeast Concern

Great Barracuda

Sphyraena barracuda

SkipjackLeast Concern

Skipjack

Katsuwonus pelamis

Scarlet Cleaner ShrimpNot Evaluated

Scarlet Cleaner Shrimp

Lysmata amboinensis

Peacock Mantis ShrimpNot Evaluated

Peacock Mantis Shrimp

Odontodactylus scyllarus

Coconut CrabVulnerable

Coconut Crab

Birgus latro

See all 43 species found here
Wreck (the only site spanning two wars)

SMS Cormoran (Guam)

Guam

Up to 37 m · Advanced Open Water / technical

Reef fish · encrusting corals

See dive site
Wreck

Guam (Second World War wrecks)

Guam

Up to 40 m · Advanced Open Water

Reef fish · turtles

See dive site
Second World War wreck

Apra Harbor (Guam)

Guam

Up to 40 m · Advanced Open Water

Japanese and American Second World War wrecks

See dive site
CountryGuam
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