PHOTOS: Polar Plunges from across the U.S.

Jordynn Markey, 6, of Hanover, Pa., holds her Chihuahua puppy "Max" while watching the 2017 Penguin Plunge on City Island on the Susquehanna River in Harrisburg, Pa., Sunday, Jan. 1, 2017. PHOTOS: Polar Plunges from across the U.S. Jordynn Markey, 6, of Hanover, Pa., holds her Chihuahua puppy "Max" while watching the 2017 Penguin Plunge on City Island on the Susquehanna River in Harrisburg, Pa., Sunday, Jan. 1, 2017.