Thanks for the informative reply. I'm sure all of this is true; at the same time, I do know that in especially the Northern States and in Europe too; they have those "polar bear plunges" which to the bystander looks like people just doing something crazy. I actually did fall into a shallow reservoir-type lake once, falling through thin ice that gave away but was able to quickly get out.
Polar Bear plunges though, from what I've seen usually have people largely wading and running into the shallow part of a lake and not submerging themselves into the water.
Random poster for such an event, Thunder Bay, Canada, this might be in late March but I know they do exist in colder months such as Jan. and Feb. :
There are even more snow mobile accidents I saw in the news; but one can research those for themselves.
Yeah, they do that polar bear plunge in the Mississippi here as well. I still shiver watching on tv the people belly flop into the shallow water. Then they're quickly hauled out and warmed up. But here in Wisconsin and neighboring Minnesota every weekend in the winter seems to have stories of people on snowmobiles or cars crashing through the ice on a lake or river.
A nearby city of Winona, Minn. had several cases of college kids getting out of bars late at night, jumping into a vehicle, and speeding down a street close to the river. At one particular turn right at the rivers edge twice within the last decade a car full of college kids missed the turn and their car plunged down an embankment and into the Mississippi. The fast current and near freezing water meant they all drowned within minutes.
It took the second time before the city decided to put up extra barriers along the embankment to try and prevent cars from going over.
And close to my home in La Crosse, Wis. we just had a young male adult after a night of drinking at a downtown bar drive off a bridge and into shallow water. They found his body under the ice after several days of dragging. His friends had been following in a car right behind him but lost him at some traffic lights. Happens every year somewhere in the state like snowmobilers going through ice. And to be sure many times alcohol was a factor.