Now this is just plain daft!! Underwater Ice Hockey is the new sport for free diving enthusiasts who play hockey under frozen lakes with a floating puck which moves along the underside of the ice. Two things really come to mind when i think of this sport 1) How do you come up for air when you need it? and 2) Why a freezing cold frozen lake? I’m from the Isle of Man and used to go swimming in the Irish Sea and even in the Summer it was cold enough.