Charlotte Comrack, left, Serena Mcgrane, center, and Nicole Wiegmann warm themselves Friday by a bonfire after jumping into Lake Andrews on the Bates College campus. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Alex Sun, left, Peter Simplicio, center, and Matt Connelly jump Friday into Lake Andrews on the Bates College campus in Lewiston. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Rowan Cody, left, Celia Tolan, center, and Lucia Hill jump Friday through a hole in the ice into Lake Andrews on the Bates College campus in Lewiston. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Sydney Bernstein, left, Lucy Green, center, and Kaitlyn O’Shaughnessy jump Friday through a hole in the ice into Lake Andrews on the Bates College campus. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Sydney Bernstein, left, Lucy Green, center, and Kaitlyn O’Shaughnessy laugh hysterically Friday after crawling out of icy Lake Andrews on the Bates College campus in Lewiston. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Behind them, three more volunteers prepare to take the plunge. Andree Kehn/Sun Journal

Grace LaFountain looks back in amazement at Katie Heunann after the two jumped Friday through a hole in the ice into Lake Andrews on the Bates College campus in Lewiston. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Cal Dagner and May Fastaia run for shore Friday after jumping through a hole in the ice into Lake Andrews on the Bates College campus in Lewiston. The annual Bates College Puddle Jump started 50 years ago as a Winter Carnival tradition. Andree Kehn/Sun Journal

Grace LaFountain, left, and Katie Heunann walk Friday across frozen Lake Andrews at Bates College in Lewiston during the annual college Puddle Jump. The tradition started 50 years ago as part of the Winter Carnival. Andree Kehn/Sun Journal