Cave Diving in Dan's Cave, Abaco, Bahamas. For a complete trip report, have a look at: http://www.rebreatherworld.com/trip-reports/25336-cave-diving-with-bahamas-underground.html
All video was shot with a Sony Z7U with an Amphibico housing and various video lights from Amphibico and Light Monkey.
WARNING! Cave diving can be an extremely dangerous activity, resulting in serious injury or death. Never, ever venture into an underwater cave without the proper training and equipment.