The Isle au Haut Ferry is a passenger ferry service that connects the mainland of Maine to Isle au Haut, a small island in Penobscot Bay. The ferry operates seasonally, typically from late spring to early fall, providing essential transportation for residents and visitors. The ferry departs from Stonington and offers a scenic ride, allowing passengers to enjoy views of the surrounding waters and islands. The service is vital for accessing the island's natural beauty, including Acadia National Park, and supports local tourism and the community's economy.