Waves

The water in the sea is moving all the time, but sometimes we do not see the waves. Sometimes they are under the water. A storm with a strong wind can make enormous waves. One wave in the Pacific CE Ocean was 34 metres high.

But the most dangerous waves are called tsunamis. A tsunami can come when there is an earthquake under the sea. The highest tsunamis have been more than 70 metres high. They can cover houses and kill people near the shore.