Tsunamis can have a significant impact on coastal ecosystems by causing widespread destruction of habitats, reducing biodiversity, and altering coastal landscapes. The force of a tsunami can uproot vegetation, erode shorelines, and introduce saltwater into freshwater environments, leading to changes in soil composition and water quality. Additionally, the sudden influx of debris and sediment can smother habitats and disrupt the feeding and breeding patterns of many species. Overall, tsunamis can result in long-term ecological damage to coastal ecosystems.