Alternatives to scuba for diving There are alternative methods that a person can use to survive and function while underwater, currently including: free-diving – swimming underwater on a single breath of air. snorkeling – a form of free-diving where the diver's mouth and nose can remain underwater when breathing, because the diver is able to breathe at the surface through a short tube known as a snorkel. surface-supplied diving – originally, and still used in professional diving for long or deep dives, where an umbilical cable provides breathing gas, voice communication and sometimes warm water to heat the diving suit from the surface. Some tourist resorts offer a surface-supplied air line diving system, trademarked as Snuba, as an introduction to diving for the inexperienced. Using the same type of demand valve as scuba diving, the diver breathes from a compressed air cylinder carried on a free-floating raft at the surface, through a simple hose limiting the diver to a depth of 20–30 feet (6–9 m). atmospheric diving suit – a rigid articulated pressure resistant suit that isolates the diver from the surrounding water pressure.
Alternatives to scuba for diving There are alternative methods that a person can use to survive and function while underwater, currently including: free-diving – swimming underwater. on a single breath of air. snorkeling – a form of free-diving where the diver's mouth and nose can remain underwater when breathing, because the diver is able to breathe at the surface through a short tube known as a snorkel. surface-supplied diving – originally, and still used in professional diving for long or deep dives where an umbilical cable provides breathing gas, voice communication and sometimes warm water to heat the diving suit from the surface. Some tourist resorts offer a surface-supplied air line diving system trademarked as Snuba, as an introduction to diving for the inexperienced. Using the same type of demand, valve as scuba diving, the diver breathes from a compressed air cylinder carried on a free-floating raft at the surface, through a simple hose limiting the diver to a depth of 20–30 feet (6–9 m) atmospheric diving suit – a rigid articulated pressure resistant suit that isolates the diver from the surrounding water pressure.