The 2011 off the Pacific coast of Tohoku earthquake (M 9.0) occurred on March 11, 2011. Large tsunami with heights of more than 8.5 m yielded severe damages to the Pacific coast of Tohoku, Japan. Other disasters such as liquefaction and environmental pollution were also caused by the earthquake in East Japan. Reports on this earthquake, tsunamis, and other disasters related to this earthquake are solicited.