Polar-bear swimmers play upside-down hockey beneath a frozen lake

Darren Barefoot sez, "Certainly the weirdest extreme sport I've seen in a while. Free-diving enthusiasts play hockey under frozen lakes, with the floating puck gliding along the underside of the ice. It's unclear if bodychecking is permitted."

Extreme Underwater Ice Hockey (Thanks, Darren!)

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retchdog

Finland: undisputed master of extreme-temperature sports. They should combine this with the sauna endurance competition.
Rich Keller

How about if an actual polar bear guards the air hole? Would that be extreme enough?
Manatee

Diving fail #1, its not oxygen the support divers are carrying its compressed air. The media never gets this right, its almost always air, NOT oxygen. Science interlude: Even at serious depth its not oxygen, in fact the deeper you go the less oxygen there is in the mixed gas you carry, otherwise the partial pressure of the oxygen in the mix becomes toxic and causes CNS poisoning = convulsions and drowning.
Anonymous

I thought it was about ACTUAL polar bears :(
- brassandlace
  
  I saw the link on my Twitter feed and also thought it was actual polar bears. While still interesting, the actual video is not nearly as adorable.
manicbassman

Awesome and totally nuts… this should be in the WInter Olypmics… anything that’s a real sport and not stupid jumping around on snowboards…
irksome

I’m waiting for the Zamboni to come out.
HubrisSonic

Lunacy! pure lunacy…
MarkM

They play with an air hole? What are they? Toddlers?
Why don’t they take the training wheels off this game?
Tdawwg

Memories of Damien: Omen II. Scaaaary memories. . . .
PaulGozzo

This is absoultely incredible! This should indeed be an olympic game. These people are athletes!