"Blue Hole has always been a priority," said Kimberly Garrett, Georgetown’s Parks and Recreation Director. "It’s kind of one of our hidden gems, but during the downtown master plan there was a ...

Sinkholes don't just happen on land, they also happen in the ocean where they're known as blue holes. And now, researchers say they've found the deepest one yet on the planet – one so large that ...

And they aren't stopping at the seafloor. Blue holes take the mysteries of the deep sea even deeper. The massive holes can be hundreds of feet deep, which causes them to appear a darker blue ...

Offshore flooded caves, so-called ocean blue holes, are extensions of the sea, subject to the same heavy tides and host to many of the same species found in the surrounding waters. Inland blue ...

Scientists have yet to reach the bottom of the Taam Ja' Blue Hole in Mexico's Chetumal Bay, which new measurements hint could be connected to a labyrinth of submarine caves and tunnels. When you ...

Beneath the land surface of the Bahamas, the underwater caves known as blue holes stretch for hundreds of miles in all directions. Today, these labyrinthine passages host a variety of tiny sea ...

Researchers from the Sansha Ship Course Research Institute for Coral Protection recently discovered that the world's deepest blue hole is located in the South China Sea. Using an underwater ...

But, technically speaking, he was sitting on the edge of an underwater sinkhole, known as a blue hole. A photo of a man wearing a dive mask while sitting on the edge of what looks like an ...

A new exploration of a legendary blue hole in the South China Sea has found that the underwater feature is the deepest known on Earth. According to Xinhua News, Dragon Hole, or Longdong ...