The Bay of Fundy’s tides in Canada can reach up to 53 feet! Tides are the movement of ocean water on the coastline. Tides are caused by the gravitational pull of the Moon and the Sun, but mostly the Moon. The Moon’s gravity pulls on the water making it high tide and lets go of the water making it low tide. In the Bay of Fundy, billions of tons of water is filled up and released in that area!!