The largest tidal whirlpool in the western hemisphere peaks during the new- and full-moon phases. Can be seen three hours prior to high tide from Deer Island Point Park. Enjoy the toll-free ferry ride over to Deer Island and experience a little taste of the Bay of Fundy on your way when you view the Old Sow! Driving directions: Route 1, Exit 56, onto Route 172 to Letete. Take the toll-free ferry to Deer Island onto Route 772.