Cave Diving in Dan's Cave and Ralph's Cave, Abaco, Bahamas.
For a trip report, have a look at advanceddivermagazine.com/articles/crystal/crystal.html

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.

Steve Bogaerts makes a dive into a deep Sinkhole with unusual formations in
sidemount tank configuration using the Razor Harness.
For more info on sidemount & cave diving visit www.gosidemount.com or www.aztecdiving.com

Dr Dr. Liane Steward cave dives in a cenote to reveal a spectaucular hidden world as he tells
the story of the colossal meteor strike 65 million years ago that created them and
thereby triggered the extinction of the dinosaurs. Stunning clip taken from ground-breaking
BBC series. Watch more high quality videos on the Explore YouTube channel from BBC Worldwide here: http://www.youtube.com/bbcexplore

FREE FALL: World champion freediver Guillaume Nery special dive at Dean's Blue Hole,
the deepest blue hole in the world filmed entirely on breath hold by the french champion
Julie Gautier. This video is a FICTION and an ARTISTIC PROJECT.
Edited by BLUENERY (c). Music: ARCHIVE - you make me feel.