A Tsunami is a series of waves caused by the movement of the seafloor. The seafloor can move as a result of an earthquake or an underwater landslide.

There is ancient evidence that Tsunamis can also be created by a comet or meteoroid striking the ocean.

Geoscience Australia has modelled the likelihood of a Tsunami occurring on the Australian coast. Areas in red have a higher chance of tsunami occuring some time in the next 1000 years than the green areas.