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The tidal range is the vertical difference between the high tide and the succeeding low tide. Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth.
The difference between high tide and low tide is called the tidal range. The biggest tidal range is found in the Bay of Fundy, Canada where sea level rises and falls as much as 16 m (53 feet) in just over 6 hours.The smallest tidal ranges are less than 1 m (3 feet). The highest tides, called spring tides, are formed when the earth, sun and moon are lined up in a row.he biggest tidal range is found in the Bay of Fundy, Canada where sea level rises and falls as much as 16 m (53 feet) in just over 6 hours. The smallest tidal ranges are less than 1 m (3 feet).