Island Lobsterman is the story of Malcolm Fernald, who, with his father Dan, lobsters the waters in the Acadia region of Maine. This film is about the unique lifestyle they lead and the challenges they face. The island they live on, Little Cranberry, is only a mile an a half long and a mile wide, but has been the home to generations of Fernalds, all of whom were lobster fishermen. In recent years they have enjoyed record catches as climate change has driven lobsters northwards up the East Coast, but they've started to see a decline from the same force as waters become too warm. They discuss this and other threats, and how despite these, they see their fishery as very sustainable for years to come. They describe why, starting with the ethics and practices of lobstermen like them with whom they share the waters and cooperate.