Point Udall
Point Udall: Guam's Westernmost Vista
Blue Hole: Guam's Underwater Jewel
Explore Guam's iconic Blue Hole: a mesmerizing underwater sinkhole teeming with vibrant marine life and thrilling diving experiences.
The Blue Hole is a stunning natural sinkhole located off the coast of Guam, renowned as one of the island's premier dive sites. This underwater shaft plunges over 300 feet, offering experienced divers a unique opportunity to explore its depths and observe diverse marine life.
Plan your visit
A brief summary to Blue Hole
Opening times, essentials, and a few local tips gathered into one calmer, easier-to-scan planning section.
Plan your visit
CJV9+HJ4, Unnamed Road, Sånta Rita-Sumai, GU
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Getting There
Boat
The Blue Hole is accessible only by boat, typically departing from Cabras Marina in Apra Harbor. Dive operators in Guam offer tours to the Blue Hole, including transportation. Contact a local dive shop for bookings and departure information. Tour costs vary.
Public Transport
If starting from a location accessible by Guam Regional Transit Authority (GRTA) bus, take a bus towards Hågatña. From Hågatña, transfer to a route that heads towards Santa Rita. Alight near the intersection of Route 4 and Route 17 in Santa Rita. From there, it is approximately 1.5 miles to an unmarked road, followed by 0.5 miles to the Blue Hole; however, note that the Blue Hole is only accessible via boat, so this route will only get you to the general area. Bus fares are around $2 for a single ride. Due to the distance and limited access to the actual dive site via public transport, this is not a recommended approach.
Taxi
Taxis are available in Guam, but can be relatively expensive. From Guam International Airport (GUM) to Santa Rita-Sumai, a taxi may cost between $130-$170 and take approximately 29 minutes. From Tumon to Santa Rita-Sumai, expect to pay around $160-$200. Once in Santa Rita-Sumai, you would still need to arrange for boat transportation to the Blue Hole. Taxis have regulated meters with a standard flag rate of $2.40, $4.00 for the first mile, and $0.80 every ¼ mile thereafter.
Local tips
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The Blue Hole is best experienced as a boat dive due to its location off the coast.
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Ideal conditions for diving are typically from April to December.
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Experienced divers can explore the depths, while those with less experience can enjoy the shallower reef areas.
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Keep an eye out for diverse marine life, including moray eels, rays, and various fish species.
Discover more about Blue Hole
The Blue Hole is a captivating dive site off Guam's western coast, celebrated as a signature natural feature. It's situated in northern Agat Bay, near Apra Harbor. The hole is a vertical shaft that begins at around 60 feet and plummets to depths exceeding 300 feet. Divers often describe the opening of the sinkhole as heart-shaped.The Blue Hole is a popular spot for advanced recreational divers. A large window opens to the outer wall at about 125 feet, allowing divers to exit and ascend after a free fall through the shaft. Visibility often exceeds 100 feet, creating ideal conditions to spot marine life. Divers may encounter moray eels, nudibranchs, eagle rays, whale sharks, dolphins, and pilot whales. The reef flat at 60 feet features coral patches and schooling fish.Strong currents can occur, so the dive is best suited for experienced divers. Entry to the site involves mooring a dive boat, and exiting requires deploying a surface marker buoy.
A brief summary to Blue Hole
Use Blue Hole as your starting point for nearby food, family ideas, nightlife, and more local discoveries.
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