Quake, tsunami slam Japan

This aerial shot shows the tsunami tidal waves moving upstream (left side) in the Naka river at Hitachinaka city in Ibaraki prefecture on March 11, 2011.

PICTURES: Tsunami reactions around the world
PICTURES: Search and rescue in Japan
PICTURES: World's biggest tsunamis
PICTURES: How earthquakes are measured
PICTURES: Deadliest earthquakes

Credit: STR/AFP/Getty Images