Polar Bear Plunge takes place at many locations around the country, and there is definitely never a shortage of participants. It involves jumping into cold water during the winter season for a charity organization. The biggest plunge takes place in Sandy Point State Park, Maryland, and raises money for the Special Olympics. Though it seems like nothing but harmless charity, the plunge can be dangerous. In some locations, participants have to sign a document consenting to the fact that they know the plunge can cause serious injury such as paralysis, hypothermia, and possibly even death. Thankfully, no one has died from taking the plunge.