It's called the Great Blue Hole. Scuba divers and snorkelers have been cruising the surface waters for decades, but few have dared to venture deeper and explore what lies beyond the blackness.

A deep blue hole in the ocean in Mexico is the deepest ... "On December 6, 2023, a scuba diving expedition was conducted to ...

Scuba diving and free diving into the cavern ... The vast majority of past visitors enthusiastically endorsed a visit to Dean's Blue Hole, calling it a beautiful natural spot that's great for ...