Freezing? They've never heard of such a thing. In fact, they're a little miffed that someone put that big sheet of ice over their favorite swimming hole. If you have any idea who may be responsible, please contact one of them and let them know. In the meantime, they will continue to diligently remove it, piece by piece.
You'll never see me removing ice from a pond so I can go swimming when it's 20 degrees farenheit outside, but hey, whatever floats their boat.