Rethinking redundancy in recreational diving/ Redundancia en buceo recreativo

English, Español tras el texto en inglés There has always been a big discussion wether or not there should by any kind of redundancy in recreational diving. Some tried a “kind of” redundancy, like spare air or H2Odyssey. In both cases, the amount of air is quite limited but it gives some kind of additional … More Rethinking redundancy in recreational diving/ Redundancia en buceo recreativo