Ice Diving

From the Tip of an Iceberg to My Tap Water: Diving the Arctic Underworld and the St Lawrence River

Lasselin descends down the wall of a giant iceberg in Arctic waters. Photo courtesy of Nathalie Lasselin.

Award-winning underwater cinematographer and documentary producer Nathalie Lasselin reflects upon her dive expeditions in the Arctic and her epic project to raise awareness about the state of fresh water in the St Lawrence River, closer to home in Montreal.

Ice Diving in the White Sea

Diver under hummocky ice in the White Sea.

Not many divers like to dive in cold water, especially under ice. A possible reason for this may be that they do not know about the new, modern, comfortable equipment for this kind of diving—equipment which can turn these extreme dives into a curious and fascinating vacation.

On the Other Side of the Ice: Ice Diving Competition in Russia

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 stress

A rapid chilling of superficial skeletal muscles (conductive cooling) creates a crippling weakening.

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.