Blue Hole is a blue hole dive site off the western coast of Guam. It is variously described as "Guam’s signature natural feature dive," "the most requested...

Dean's Blue Hole is a blue hole located in The Bahamas in a bay west of Clarence Town on Long Island and is the world's third deepest with an estimated...

Taam Ja' blue hole Belize Taam Ja' blue hole is an underwater sinkhole located in Chetumal Bay at the southeast corner of the Yucatan Peninsula. Its name...

A blue hole is a large marine cavern or sinkhole, which is open to the surface and has developed in a bank or island composed of a carbonate bedrock (limestone...

Great Blue Hole The Great Blue Hole is a giant marine sinkhole off the coast of Belize. It lies near the center of Lighthouse Reef, a small atoll 70 km...

Dragon Hole, also known as Yongle Blue Hole named after the third Ming emperor, was the deepest known blue hole in the world at 300.89 metres (987.2 ft)...

The Blue Hole of Santa Rosa, or simply the Blue Hole, is a circular, bell-shaped pool or small lake located along Route 66 east of Santa Rosa, New Mexico...

The Blue Hole is a diving location on the southeast Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea. The Blue Hole is a submarine...

abandoned rock quarry in the Florida Keys Blue Hole (Guam), outside the entrance to Apra Harbor Blue Hole (Hawaii), also known as Wailua Headwaters,...

The Amberjack Hole is a blue hole located 48 km (30 mi) off the coast of Sarasota, Florida. The rim of the hole is approximately 34 m (112 ft) below the...

The Green Banana Hole is a blue hole 80 km (50 mi) off the United States western seaboard southwest of Sarasota, Florida. The rim is approximately 47 m...

the site of the Hells Bells bell-like rock formation Blue Hole, Santa Rosa, New Mexico Blue Hole, Castalia, Ohio Bottomless Lakes, near Roswell, New Mexico...

Boesmansgat (or Bushmansgat), also known in English as "Bushman's Hole", is a deep submerged freshwater cave (or sinkhole) in the Northern Cape province...

The Blue holes of Saudi Arabia are a series of twenty marine caverns along the coast of the Red Sea, between the Afifi region in the south and the Gulf...

starboard side hiding the zone of impact with the mine. There is a huge hole just beneath the forward well deck. The bow is heavily deformed and attached...

Most of the islands on the reef are found on planar reefs.: 158–160  Wonky holes can have localised impact on the reef, providing upwellings of fresh water...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

Reef is the most easterly diving area in Belize, it is home to the Great Blue Hole, made famous by Jacques Cousteau in 1970; Turneffe Atoll lies directly...

continued their advance towards Japan by invading other Pacific islands, such as Guam, Saipan, Palau, and Iwo Jima. Truk was attacked again from 12 to 16 June...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

iguana the blue land crab (Cardisoma guanhumi) Invasive species include the boa constrictor The Cozumel flag displays a swallow on a blue and white background...

Domingo, the country's capital. The area is known for its white sand beaches, blue turquoise waters, and balnearios which face both the Caribbean Sea and the...

liner. Once-popular access points frequented by divers, such as Gimbel's hole, no longer exist. Divers call Andrea Doria a "noisy" wreck, as it emits various...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

returned for another attack. The second torpedo salvo blew a 30-foot (9.1 m) hole in the Royal Oak, which flooded and quickly capsized. Of the 1,400-man crew...

regions of the world Cave dive sites: Blauhöhle Blue hole Blue Hole (Red Sea) Great Blue Hole Blue Hole (Guam) Boesmansgat Cenote Dzibilchaltun Chinhoyi Caves...

Association (HEPCA) installed 32 mooring buoys around the wreck and drilled holes in the hull to allow trapped air to escape. During this work, the ship was...