Boulder Alley

Type:

Scuba Diving

Entry:Unknown

Difficulty:Intermediate

Tags:

ReefWall

About This Dive Spot

Boulder Alley is described as a night dive with very clear water, run as a drift along a cliff line between a sea wall and a nearby point. The route is focused on moving with the current along the wall-like coastline. Divers commonly see large schools of pyramid butterflyfish, and turtles are reported on many dives, with occasional pelagic encounters.

Planning details

Reported depth and seasonality.

Typical conditions

Super-clear water is described, and the dive is characterized as a drift along a cliff line.

Local intel

Community notes to help plan your visit.

Tailored notes for different activities.

Scuba

Highlighted as a night drift dive along a cliff line.

Dive Spot Log Averages

Average conditions based on logged dives & visits

No community dive data has been logged here yet. Be the first to record a dive and seed the averages.

Dive Conditions Planner

Current snapshot, today hourly conditions, and seven-day planning data.

Current snapshot

Right now

--🌥️Variable

Weekly trends

Marine rhythm

Surface outlook

Unlock the full potential of DiveJourney.

Recent Logged Visits

No Dive Logs Yet

Be the first to log a dive at this spot and share your experience!

Spots Near Boulder Alley

📍 0.5 km

Sharks Pit

Not Set

An unusual dive on the Orote Peninsula featuring numerous WWII-era artifacts. The site includes a pinnacle that rises from about 30 m up to roughly 4 m, with sea fans reported around 12 m. It’s described as a strong macro-photography spot, with small subjects and fish life around the structure.

📍 1.0 km

Tarzan Cave

🏖️

This shore-access site is reached via the Navy Base and is used for both snorkeling and diving. Underwater features include an old crane, pipes, and other debris on the bottom. Sea turtles are commonly encountered here, including hawksbill and green turtles, and crinoids are frequently seen and popular with underwater photographers.

📍 1.2 km

Barracuda Rock - Guam

Not Set

A popular dive site along the Orote peninsula, known for occasional sightings of barracuda and frequent encounters with turtles and reef sharks. Depth varies from very shallow areas to deeper sections beyond 100 feet, with an average depth around 45 feet. Divers often report multiple green sea turtles around the site and nearby peninsula, and white-tip and black-tip reef sharks are commonly seen on dives.

📍 1.4 km

Crevice

⚓

A large canyon feature begins around 60 ft, with high visibility and sea fans lining the walls. A shallow plateau makes the site approachable for a wide range of divers, while a deeper wall appeals to extended-range profiles. Divers commonly encounter turtles and reef sharks, with schools of barracuda and other pelagic species also possible. Currents may be present, and access is by boat only.

📍 1.5 km

Turtle Rock - Guam

⚓

Turtle Rock is a dive around a rock islet with a steep drop-off, reaching about 85 ft. The site is named for its turtle-like shape and is known for regular sea turtle sightings. Access is possible from shore via Navy Base Guam, though it is described as better reached by boat. The water is typically clear, making it well-suited for wide-angle photography.

📍 2.0 km

Gab Gab 1

🏖️

This shore dive sits off a beach area and is commonly used as a training location, making it suitable for a wide range of experience levels. It features a reef environment with coral growth and abundant fish life. Access to the shore entry is controlled through a Navy Base, while divers without military access may be able to reach the outer reef by boat.

Loading nearby spots...

Frequently Asked Questions

What's the best entry point at Boulder Alley?

Entry at Boulder Alley is detailed in the spot description above. Look for specific landmarks, access paths, and any tide or condition requirements. Local divers often share updated entry tips in their dive logs.

What conditions are best for diving Boulder Alley?

Optimal conditions at Boulder Alley depend on several factors including tide, wind, and season. Check recent dive logs for current condition reports and patterns. Generally, calmer seas and high tide provide better visibility and easier entry.

What is the maximum depth and typical visibility at Boulder Alley?

Depth and visibility information for Boulder Alley can be found in the spot details and recent dive logs. Conditions can vary significantly based on weather, tide, and season. Always plan your dive according to current conditions and your certification level.

Are there any safety considerations or local etiquette at Boulder Alley?

When diving Boulder Alley, respect local regulations, marine life, and other water users. Be aware of any specific hazards like currents or boat traffic mentioned in the spot description. Follow Leave No Trace principles and local diving etiquette.