Polar bear plunge. It turns out that this is a term that a number of people aren’t familiar with for one reason or another. It isn’t a zoo or animal term. In its least specific meaning it is a person going into the ocean in the middle of the winter.
Polar bear plunges are often popular fund raising events. They accomplish this by either having participants pay a flat entry fee or by soliciting pledges for time spent in the water. A plunge can be held in any body of water that people can swim in and has a water temp of 44? F or lower.
They’re also a popular group activity for clubs. Some of the clubs take plunges just for fun, and others take plunges in support of other causes and charitable organizations.