Mariana Islands (Saipan, Rota, Guam)
Blue Hole (Guam)
- Max depth91 m (299 ft)
- CertificationOpen water / no overhead
Diving and fills
Dive here with
What it looks like
JC Rentals Guam Blue hole Tour cave diving. Guam Blue Hole Guam Blue Hole - scuba diving グアムのブルーホール The Blue Hole Guam
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Videos and posts
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JC Rentals Guam Blue hole Tour cave diving. Guam Blue Hole Guam Blue Hole - scuba diving グアムのブルーホール The Blue Hole Guam
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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.
The dive
On the reef flat off Orote Peninsula, a hole opens in the reef.
Profile and sections
On the reef flat off Orote Peninsula, a hole opens in the reef. You sink down the vertical shaft and leave it through a window in the wall into the blue, where large pelagic fish and sharks often pass along the wall; the dive ends as a drift in the open ocean. Visibility averages 30 m and is often more.
On the reef flat at 18 m there are coral patches with schooling fish.
Practical: the seas are usually calm (MDA).
- Depth and profile
- The top of the hole lies on the reef at 15–18 m (50–60 ft); the shaft goes past 91 m (300 ft) (Wikipedia, Guam Dive Guide; MDA: deeper than 60 m/200 ft). The window to the open sea is at ~38–40 m: 125 ft according to MDA, ~130 ft (40 m) according to Wikipedia.
- Configuration
- An open shaft with daylight and a window in the wall: recreational gear, with a buoy (SMB) for the pickup in open water (estimate).
Who can dive where
- At least Open water / no overhead
- Configurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
- Goes down to 91 m (trimix or deco may be needed)
This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.
How to get there
Boat only (sheer cliffs make a shore dive impossible), ~20 minutes from Cabras Marina in Apra Harbor; the boat ties up to a buoy off Orote Peninsula. Plan it as an advanced and deep dive: according to Wikipedia the window is 'just within the limits of an advanced recreational dive, depending on certifying agency'; Guam Dive Guide names Open Water, and past 40 m (130 ft) you need a special certification according to MDA.
Around Blue Hole (Guam)
FillsNo fill station known nearby
Going to the Mariana Islands with your team?
Marcel finds the sites that match your team's certifications.
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