From sumping through Wookey with a pair of repurposed, WWII Bomber O2 tanks filled with air; to wearing side mounted, bailout rebreathers enabling explorers to logistically...
Sidemount was considered heresy back in its early DIY days—please pass the inner tube. And even though there’s now a plethora of commercial kit available, sidemount...
On Valentine’s Day, Dr. Richard Harris, aka ‘Dr. Harry,’ and the Wetmules made the first reported hydrogen (H2) rebreather dive to a depth of 230m/751 ft,...
In February, explorer and instructor Mikko Paasi and his crew from Bottomline Projects Foundation were charged with investigating the source of water in Toh Wang cave...
Divers still seek comfort in the notion of the “underserved” hit to explain unexpected incidents of decompression sickness. “Hey, my computer said I was fine.” NOT....
Semi-closed rebreathers (SCR) were the first purpose-built breathers for sport divers circa 1995—Thank you Draeger! But while tekkies clearly needed mixed-gas units, many believed that recreational...
Good things come in threes. At least that’s what explorer and former commercial diver Axel Schoeller believed when he needed a specialized rebreather platform for a...
Our young Italian poet-explorer Andrea Murdoch Alpini makes a pilgrimage to visit cave explorer Don Shirley at the legendary Bushmansgat cave in South Africa. In addition...
Spanish-born cave diver and underwater photographer Joram Mennes illuminates hidden karst color.
RF4 official picture maker Jason Brown, takes us for a candid, behind the lens tour of one of the most consequential rebreather events in the last...
