Over 125 participants from 13 teams plunge into the frigid waters of Lake Mendota during the 9th Annual Mendota Polar Plunge on Saturday, Feb. 28. The event, held in support of Special Olympics of Illinois, raised $36,000 for local programs serving the Mendota, La Salle and Peru areas. Despite temperatures of 39 degrees with a wind chill of 23 degrees, brave plungers took the icy dip to support athletes in Special Olympics programs.