Cave diving is a thrilling version of underwater diving drawing a greater following every year, as some underwater divers grow bored of the usual and seek something more exciting. Cave diving provides an often unexplored realm to view with the aid of underwater lights.

Cave diving requires special equipment, and in the United Kingdom is an add-on to the very popular sport of caving. In the U.S., cave diving is a variation of scuba diving. Rebreathers are necessary equipment for cave diving, devices which greatly extend the breathing time underwater in case of being lost inside a cave for a time.

Diver propulsion vehicles are commonly used to get down into the caves and dry suits are needed for maintaining proper body heat in the cold environment well hidden from the sun. Cave diving requires great skill and extensive training with inherent risks like drowning and decompression sickness.

Cave diving can be as low-intensity as cavern diving, diving into caves no further than 200 feet and not beyond the reach of natural light. But others explore far beyond this, penetrating caves thousands of feet deep and well beyond the reach of the sun. Silt and sand get kicked up into the water with the diver’s passing, making visibility a challenge even with the aid of artificial light.

The rewards for the extensive training, expensive equipment, and bravery are great as underwater caves often have flora and physical features that cannot be found elsewhere. And while many argue that cave diving is a deadly sport, statistics reveal that most deaths that have occurred in cave diving have been due to lack of training or proper equipment.