Shake, Rattle and Slide - The Work of Earthquakes, Volcanoes and Glaciers

Before the tsunami , the water is calm.

Images Courtesy and Copyright Digital Globe

Before the large wave hits, water is sucked away from the shoreline exposing fish and even shipwrecks.

Then a large wave (tsunami) appears and rushes on to the shore. Suddenly this water can reach many miles inland as is demonstrated in the third image.