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Blue Hole (Red Sea) – a submarine sinkhole around 94 m (308 feet) deep in east Sinai, a few kilometres north of Dahab, Egypt on the coast of the Red Sea. Dead Sea sinkholes; Dean's Blue Hole – the world's second deepest known salt water blue hole with an entrance below the sea level; in the Bahamas
The Kola Superdeep Borehole SG-3 (Russian: Кольская сверхглубокая скважина СГ-3, romanized: Kol'skaya sverkhglubokaya skvazhina SG-3) is the deepest human-made hole on Earth (since 1979), which attained maximum true vertical depth of 12,262 metres (40,230 ft; 7.619 mi) in 1989. [1]
The deepest blue hole in the world is the Taam Ja' Blue Hole in Chetumal Bay, which was found to have a depth of more than 420 metres (1,380 ft) in 2024. [ 3 ] The second deepest is the Dragon Hole , or Longdong, in the South China Sea at 300.89 metres (987 ft) deep, [ 4 ] while the third deepest blue hole in the world is Dean's Blue Hole at ...
"Venturing into uncharted waters, our team will have to 'expect the unexpected,'" Blue Marble Exploration's website states. Dean's Blue Hole is the third-deepest blue hole in the world, with a ...
It's not the deepest hole ever drilled, but it is the deepest sample of this kind of ocean rock researchers have ever obtained, Lang said.. Lang and the team were after the type of rock that once ...
In 2012, scientists exploring blue holes in the Bahamas discovered bacteria deep in the caves where no other life existed, potentially filling the knowledge “gap” on what types of lifeforms ...
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 (154 ft) below the surface and the hole extends downward approximately 130 m (427 ft). Blue holes in this area are thought to have formed as sinkholes on land 8,000 to 12,000 years ago. Due to ...
Location map Puerto Rico Trench—United States Geological Survey Perspective view of the sea floor of the Atlantic Ocean and the Caribbean Sea. The Lesser Antilles are on the lower left side of the view and Florida is on the upper right. The purple sea floor at the center of the view is the Puerto Rico Trench, the deepest part of the Atlantic ...