If your home reef is covered in ice, do not rush to hang your fins on the wall. Ice above your head will make your underwater photos more spectacular! As the cold season has started where I live (in the Russian Far East), more and more divers are coming to dive the East Sea. This year, the Second World Open Diving Championship in “Under-Ice Direction Finding” was held in Vladivostok by the National Dive League of Russia.
Thermal issues affect the comfort, performance and decompression stress experienced by divers. The impact varies with the timing, direction and magnitude of the thermal stress. Thermal protection can be provided by a variety of passive and active systems. Active systems should be used with particular care since they can markedly alter inert gas exchange and decompression risk.