“It is impossible to talk about the Bay of Fundy without talking about tides. The ebb and flow of the Fundy tides are equal to the output of 250 nuclear power stations. This massive amount of untapped energy fuels a fragile ecosystem that provides a nutritious food supply for numerous species of bottom-dwelling organisims, birds, fish and the world’s largest mammals, whales.

Twice a day the Bay of Fundy fills and empties from the gravitational pull of the moon and the sun on the earth. Often the tides begin with a significant wave called The Bore. One of the finest examples of the Bore in Nova Scotia is on the largest river in the province, the Shubenacadie. The Bay of Fundy provides the fuel for the exciting Tidal Bore on the Shubenacadie River system. There are several companies in the region providing rafting tours as this wall of water advances up the river.

Tides in the Bay of Fundy proper (along south western Nova Scotia) can reach a height of 3.5 meters (11 ft.), while tides near the head of the Bay (in the Minas Basin into which the Shubenacadie River flows) can rise and fall 13 meters (43 ft.) on average and reach an unbelievable 16 meters (53 ft.) during the springtime."

-http://www.whalewatchingtours.info/bayoffundy.php