Casco Bay Lines is a ferry service located in Maine, providing transportation to several islands in Casco Bay. Established in 1878, it connects the mainland to popular destinations such as Peak's Island, Great Diamond Island, and Long Island. The service operates year-round, offering both passenger and vehicle ferries. The ferries are an essential part of the local community, facilitating travel for residents and visitors alike. In addition to regular service, Casco Bay Lines also offers special excursions and charter services, allowing passengers to explore the scenic beauty of the bay and its islands.