Researchers discover deepest-known blue hole globally

Paper title: Recent records of thermohaline profiles and water depth in the Taam ja’ Blue Hole

Taam Ja' Blue Hole is not new, or newly discovered, it was found in 2003[0], it's competing with the Dragon Hole[1] for depth. If these measurements stand up, this could compete with the Hranice Abyss[2] (the deepest pit cave in the world)

[0]: https://en.wikipedia.org/wiki/Taam_Ja%27_Blue_Hole [1]: https://en.wikipedia.org/wiki/Dragon_Hole [2]: https://en.wikipedia.org/wiki/Hranice_Abyss