During the 12th annual Alewife Festival, on Saturday, May 25, Herman Wanningen, founder of World Fish Migration Day, and Joshua Royte, senior scientist for The Nature Conservancy in Maine, will show the film “Love Flows,” at George and Susan Mason’s big yellow church, 123 Borland Hill Road in Damariscotta Mills, at 2:30 p.m. The film, directed by Francisco Campos-Lopez, is about the impacts of dams on fish migration. For information about the screening, contact Deb Wilson at deb.wilson1028@gmail.com or 380-6997. For more about the Alewife Festival, go to damariscottamills.org.