A massive tsunami approaches a coastal city, driven by sudden seafloor displacement. As the wave enters shallow water, its speed drops while height increases dramatically, compressing energy into a towering wall of water. The greatest destruction comes not just from the initial impact, but from the sustained surge and powerful backflow that follows, capable of reshaping entire coastlines. This video is AI-generated for visualisation and educational purposes and does not depict real events or real-world data. #TsunamiScience #OceanDynamics #CoastalRisk #EarthProcesses #Waves