The impact of global tsunamis on the environment is extensive and complex, covering various ecological and geological aspects that can affect ecosystems for years. Tsunamis, generated by tectonic plate movements, earthquakes, or volcanic eruptions, have the potential to cause significant damage to natural habitats. One of the most obvious impacts is the destruction of coastal habitats. Beaches, coral reefs and mangrove forests which function as natural protection are often destroyed by tsunami waves. Coral reefs play an important role in maintaining marine biodiversity, while mangrove forests provide breeding grounds for various fish species. Loss of these structures can result in a decline in fish populations and other marine organisms, with implications for local fisheries ecosystems and the economies of communities that depend on this sector. Tsunamis also cause environmental pollution. Polluted seawater can carry industrial waste, hazardous chemicals and debris ashore. This toxic waste can damage soil, affect freshwater quality, and potentially endanger human health. Additionally, the long-term impacts of this waste can create uninhabitable habitat zoning, reducing the genetic diversity of remaining species. Soil erosion is another problem faced after the tsunami. Strong waves can erode coastal land, cause loss of agricultural land and damage infrastructure that supports people’s lives. Redevelopment of affected areas often does not take into account climate change and rising sea levels, increasing future risks. There are also significant impacts on land flora and fauna. The movement of water masses can overturn habitats, causing invasive species to fill gaps left by local species. This disrupts the balance of the ecosystem and can lead to the extinction of threatened species. Disrupted ecological communities take years to recover, if possible. Managing the post-tsunami impact is a big challenge. Sustainable recovery requires an ecosystem-based approach. Restoration of coastal habitats, such as replanting mangrove forests and protecting coral reefs, must be a priority so that ecosystems can be rehabilitated. In addition, good spatial planning can reduce the exposure of coastal areas to future waves. Local community outreach plays an important role in mitigating the impact of the tsunami. Education about risks and preventive measures can increase community resilience to natural disasters. Collaborative efforts between governments, non-governmental organizations and local communities can help strengthen recovery strategies and mitigate environmental impacts. Finally, data analysis and long-term research are critical to understanding the impacts of tsunamis and promoting effective environmental policies. With in-depth research, we can design adaptive and resilient strategies to face the environmental challenges faced by the tsunami, ensuring the sustainability of ecosystems and communities in affected areas.