snuba
n.— «For an unusual type of underwater exploration in the Red Sea try what the Israelis call snuba. It’s a combination of scuba diving and snorkeling. Divers, who must be at least 8 years old, wear fins and a mask but breathe through a 20-foot-long tube connected to a tank on an inflatable raft.» —“Israel From Cliff Top to Desert Bottom” by Caren Osten Gerszberg New York Times Sept. 28, 2008. (source: Double-Tongued Dictionary)