A "tsunami-prone" area is a region that is at a higher risk of experiencing tsunamis, which are large ocean waves typically caused by underwater earthquakes, volcanic eruptions, or landslides. These areas are often located near tectonic plate boundaries, where seismic activity is more frequent. Countries like Japan, Indonesia, and Chile are examples of tsunami-prone regions due to their geographical locations along the Pacific Ring of Fire. In these areas, early warning systems and preparedness plans are crucial for minimizing the impact of potential tsunamis on communities and infrastructure.