Look Out Below: Growth of a Tsunami  

A tsunami wave usually begins as barely a ripple above the surface out in the open ocean, often thousands of miles from its ultimate destination. By the time it reaches shore, a tsunami may have grown to nearly a hundred feet in height, and can be a...
Subject: shallow
Transcript: shallow water waves even in the deep ocean. And the result is that in the deep ocean, They may not be observable very readily. They may be a few centimeters