Bikini clad Brian Beal of Aurora and his friend Tiffany Inman of Yorkville prepare for the Polar Plunge Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Leading the way into the icy-cold waters for the Naperville Fraternal Order of Police Lodge 42, Officer Roger Otto lifts his arms into the air, Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Under the watchful eyes of the Little Rock-Fox Fire Protection District divers, another group enters the icy cold waters of Loon Lake Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Joel Craig of Plainfield plunges into the icy waters of Loon Lake in honor of his Special Olympian son, Jim Craig Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Thirteen-year-old Kayla Gettemy (left) and Kylie Widlard, 12, representing the Naperville Faternal Order of Police Lodge 42 emerge from the icy waters of Loon Lake Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Rachel Herrick of Grant Park representing High Plains Builders emerges from the icy waters of Loon Lake Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

"Troy" the German Shepard takes the Plunge with his owner Kendall County Sheriff's deputy Steve Stricker during the Polar Plunge Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

"Troy" the German Shepard shakes after plunging with his owner Kendall County Sheriff's deputy Steve Stricker during the annual Polar Plunge at Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Plunging for Special Olympian Henry Hogan, memers of the "Oh Henry" team celebrate during their splash into the icy waters of Loon Lake during the annual Polar Plunge Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Members of Coal City High School's "Polar Coalers" team make a quick exit from the icy waters of Loon Lake during the annual Polar Plunge Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Just before the annual Polar Plunge began, Lauren Rayburn, 10 of Newark take a run down the sled hill in a saucer Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media

Thirteen-year-old Ryan Rayburn of Newark flies off his snow board as he speeds down the sled hill Sunday at Silver Springs State Park in Plano. | Steven Buyansky~Sun-Times Media