At this project a work flow is proposed for photorealistic tsunami visualization based on scientific data. The goal of this work is to quickly and efficiently visualize tsunami impact on exposed coastal zones. All parts have been thoroughly tested and applied to a first animation prototype visualizing a historical tsunami at the old port of Chania – Greece, by using the ArcGIS suite and Blender. After that, focus was shifted to utilize foss GIS tools and automatize the process using a script in Blender. The scenario was a depetition of the 365AD tsunami . The final objective was to use the animation to train civil defence in Crete, in the context of the first ever field exercise on tsunami preparedness in Europe, funded by the EU . This exercise took place on October 23-24 in Heraklion and Chania.