Teenager recorded moment tsunami struck his home town of Ishinomaki . Mao Takahashi 's video watched thousands times on Takahashi . Amount of footage of just a few years disaster made it more comprehensible for people across the world .
Mao Takahashi recorded moment tsunami struck his home town of Ishinomaki . Teenager 's video watched over two million times on YouTube . Amount of footage of last year 's disaster made it more comprehensible for people across the world .