Downeast Institute (DEI), Maine Aquaculture Innovation Center, Maine Center for Entrepreneurs, and partners will host “Shell-ebration,” an event focused on emerging opportunities for shellfish aquaculture in Washington County, from 10:30 a.m. to 3:30 p.m. Sunday, June 8, at Downeast Institute, 39 Wildflower Lane, in Beals, Maine. The event is free and open to the public and will take place rain or shine.