Cave diving combines the thrill of scuba diving and with the excitement of exploring a cave; it’s a challenging activity even for experienced explorers. At these four sites — some of the most popular ...

Watch as divers locate fossils in blue holes—from crocodiles, owls, tortoises, birds, and more—species that are now extinct in the Bahamas and some of which have never been recorded in science before.

If one thing’s clear from Jill Heinerth’s breathtaking new memoir on her life as a professional cave diver, it’s that this unusual career path requires serious mettle. Self portrait under the tannic ...

Extreme explorers attempt the deepest underwater body recovery in history. March 19, 2007 — -- Bushman's Hole, on the edge of the Kalahari Desert in South Africa, is one of the strangest places ...

Diver and photographer Jill Heinerth has explored unmapped, underwater caves deep in the earth, as well as the submerged crevices of an iceberg. She has seen hidden creatures and life forms that have ...