Tsunamis are mainly mistaken by tidal waves because of their similarities. But when Tsunamis actually occur their is not just 1 wave but usually about 7-8 waves. In the ocean, Tsunamis are about 1 metre in hight, But as they approach the shore, they can grow to around 85 metres. Tsunamis occur when the earths crustal plates shift directly north creating a massive wave moving in all directions.

1607- A Tidal wave swept along the Bristol Channel,

killing 2000 people (possibly a Tsunami)

1755- The 1755 Lisbon Tsunami Killed 60,000 - 90,000 1792 - Old lava dome collapses in the city of Kyushu, Japan when the

Mount Unzen volcano erupts which creates a tsunami killing around

14,300 people.

1906 – A typhoon combined with a tsunami kills an estimated amount of 10,000 people in Hong Kong, China