Santa stopped by the Merrimack YMCA last week as families enjoyed underwater pictures with St. Nicholas, cookie decorating, writing letters and much more. The YMCA Storm Swim Team, who ran craft projects for the children, and the aquatics leadership team of Allie Thomas and Shea Wilkins-Fleck, with their staff and lifeguards (elves), pulled off an unbelievably fun, safe and exciting holiday event.