New footage shows the force with which the tsunami struck Japan's coast.

In the fishing port of Miyako, in Iwate prefecture, boats were overturned, while video from Kamaishi city shows cars being dragged down city streets by the water.

The tsunami that followed the 8.9-magnitude earthquake wreaked havoc along a huge stretch of Japan's north-east coast, sweeping far inland and devastating a number of towns and villages. Powerful aftershocks are continuing to hit the region.

Footage courtesy of TV Asahi and TBS