The Waterloo Piranhas swim team will unveil its record board as part of its 50th anniversary celebration May 13 at the Monroe County YMCA-HTC Center, 9514 Caring Way, Columbia. Join past and present Piranhas from 10:30-11:30 a.m. for punch and cookies and to share some memories. Special shirts for this event may be ordered at burntsilk.com/s/search?q=Piranhas.