On March 11, 2011 the Great East Japan Earthquake triggered a massive tsunami that devastated Ishinomaki City in Miyagi Prefecture and killed nearly 4,000 residents, the most of any municipality impacted by the quake. To understand why so many residents failed to escape, and to pass on lessons of tsunami evacuation to future generations, a legacy group conducted a survey of 100 survivors. The interviews shed light on evacuation behavior that day and allowed researchers to recreate survivors’ actions using computer graphics. The results reveal a pattern of dangerous evacuation decisions, but also heroic actions that saved many lives. 　,Thirteen years since the great earthquake and tsunami, it is hoped that a better understanding of evacuation behavior, and the voices of survivors, will help save lives in the future.