Facts about tides

Tides are never found or observed in the ocean, but they are found in coastal areas.

There are one to four tides per day, each anywhere from 3 to 50 feet high, moving at different speeds and directions.

The highest tides are in the Bay of Fundy. The bay is 90 miles long and 30 miles wide in an east-west direction.

At high tide, the bay has 20 feet at the west end, increasing eastward to 50 feet at the east end.

The sea is always flat. Tides are an illusion of the coastal seabed moving through the ocean caused by the periodic thermal expansion of the earth's crust.