sentences:  There is however, rail ferry service between Whittier, Alaska and Prince Rupert, British Columbia (the AquaTrain, operated by the Alaska Railroad) and Washington state (Seattle), and a ferry to and from Mobile, Alabama and the Port of Ponce Railroad in Ponce, Puerto Rico.Regular ferry service also links Vancouver Island and isolated Sunshine Coast communities to the mainland and to Alaska.There is also automobile ferry service between Nova Scotia and Newfoundland and Labrador, from Quebec to Labrador, and between Labrador and the island of Newfoundland.