The North Sea, unlike the Red Sea, is a very broad basin that is relatively shallow

The North Sea, unlike the Red Sea, is a very broad basin that is relatively shallow. It opens into the Atlantic Ocean for long distance along its north margin. It is bounded on the west by the British coast, while to the south and east by the coast of northern Europe. In the North Sea different tidal ranges are recorded in different parts.

The tidal ranges are nearly 5 meters along the Scottish and English coasts. But the range is less than 2.5 meters at the southern tip of Norway. The tidal ranges are greater along the Scottish and English coasts because the tidal wave that moves in from the Atlantic Ocean possesses more energy.

As the wave turns southward towards the European coast it loses much of its energy. There are two tides with gyratory motion around the amphidromic points, one produced in the north end and the other in the south end of the sea.