For me, this is one of the best clips out there with regards to the nature of the destruction of tsunamis. Shot by Mr. Kenichi Kurakami, and posted by Youtube user clancy688, this unbelievable, first-hand footage gives the viewer an intense sense and understanding of the way tsunamis can approach low-lying coastal margins, and how coastal defences do not always work as intended.
Geophysical Hazard Risks, Geophysical Hazards, Hazard Risk and Vulnerability, IBDP Geographic Themes (Options)