The idea of disappearing into some of the world’s deepest pockets submerged in pitch black water, with only the sound of heavy breaths for company, would bring on a shiver for many.

The Thai boys trapped inside a flooded cave for two weeks are not yet ready to attempt a dangerous dive to freedom, rescuers said Saturday, after the death of a military diver underscored the huge ...

In 1973, four divers entered the Shaft, a deep sinkhole in Mount Gambier, South Australia, without the training or equipment needed for cave diving. The site’s narrow passages, pitch-black waters, and ...