Don't Dive? Then Snuba is for You

Scuba divers have long been drawn to the Florida Keys. Now these crystal blue waters are luring nondivers, too, thanks to snuba — a hybrid of snorkeling and scuba diving. The system supplies air from a raft on the surface, with divers connected to a hose that stretches to a depth of 7 m.
 Unlike scuba diving, no certification is necessary — just a short orientation.
via TIME / more