Watching water move would not normally be my idea of fun, but the Bay of Fundy is not your typical body of water. This place has the highest tides in the world. A hundred billion tons of water pour into the bay from the Atlantic, creating tides that rise and fall up to 50 feet a day. The bay is shaped like a tunnel, and when the tides meet the rushing waters of the St. John River head on there's no place to go but back upstream…so the river actually flows backwards twice a day. It's pretty cool to see.

We also drove out to the little seaside town of St. Martin (population 387, plus 250 cruise ship tourists), which is home to an enormous water-carved cave as well as the best seafood chowder I've ever tasted. The tide there is over 27 feet. At low tide, you can clamor over seaweed-covered rocks and walk along the bottom of the ocean straight into the cave; boats in the harbor actually sit in the mud until the tide comes in and makes them float. Huh.

That was our last Canadian port. To Bar Harbor, Maine tomorrow…