Cave diving is a type of technical diving in which specialized SCUBA equipment is used to enable the exploration of natural or artificial caves which are at least partially filled with water. It is an extension of the more common sport of caving, but is much more rarely practised because of the skills and equipment required, and because of the high potential risks.
Despite these risks, water-filled caves attract cavers and speleologists due to their often unexplored nature, and present divers with a technical diving challenge. Caves often have a wide range of unique physical features, such as stalactites and stalagmites, and can contain unique flora and fauna not found elsewhere.
For more information and links to Cave Diving Training Organizations, please visit: http://en.wikipedia.org/wiki/Cave_diving