When most people think about how tsunamis form , they picture towering waves rushing toward the shore. But this dramatic image only shows the final act in a complex natural performance. To uncover the full story, we must shift our focus away from just the waves and instead explore the massive energy transfer that makes these oceanic giants possible. According to the United States Geological Survey (USGS) , a tsunami is not merely a wave—it's a series of waves triggered by the sudden displacement of a large volume of water , usually due to seismic or geological events. But what truly powers a tsunami is the release and movement of energy across thousands of kilometers of ocean. π Earthquakes Beneath The Sea: The First Energy Spark The most common cause of tsunamis is underwater earthquakes. But it’s not just any quake that creates a tsunami—it has to be shallow, powerful, and displacing . When tectonic plates grind against each other along subduction zones—like the infamous Ri...