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Sidemount Technical Wreck Diving Subic Bay Philippines

Originally posted 2018-03-07 23:56:22. Choosing and Using A Redundant Air Source By Andy Davis Pony cylinders are a popular choice amongst divers who seek a redundant form of air supply as a contingency for Out-Of-Air (OOA) emergencies when scuba diving. There is a lot of debate about when, or if, a recreational open-water diver should […]