The last tsunami that shocked the world occurred on September 28 2018, when an earthquake measuring 7.5 on the Richter scale rocked Palu and Donggala, Central Sulawesi, Indonesia. This earthquake triggered devastating tsunami waves, damaged infrastructure and killed more than 4,300 people. In a matter of minutes, a 6 meter high wave hit the beach, sweeping away houses, vehicles and everything in its path. Throughout the world, tsunamis have a terrible impact and can change people’s lives in a matter of seconds. The tsunami before Palu also reminds us of the tragedy of 26 December 2004 in the Indian Ocean, where more than 230,000 people died due to large waves triggered by a megathrust earthquake. The tradition of disaster mitigation has developed rapidly since then, with the deployment of better early warning systems and public education about the dangers of tsunamis. Various organizations and governments are now focusing on research and development of early detection technology. For example, the Pacific Tsunami Warning System (PTWS) provides important information regarding earthquakes and potential tsunamis in island areas. Training and simulation activities are carried out regularly to equip the community with the knowledge needed to survive when a disaster occurs. In recent years, other tsunamis, although not as strong as the one in Indonesia, have also occurred in Japan and Chile. Japan’s tsunami in 2011 was triggered by the same earthquake that caused the Fukushima nuclear disaster. Indonesia and Japan are clear examples of the importance of infrastructure resilience and community preparedness. It’s not just coastal countries that need to be on alert. Tsunamis can penetrate deep into land depending on the terrain and wave potential that occurs. Therefore, more and more countries are involved in establishing tsunami-resistant building standards, as well as conducting studies to understand tsunami mechanisms and patterns in each region. At the global level, the role of the international community is also very important in helping countries most vulnerable to tsunamis. Cross-border cooperation in providing emergency assistance and post-disaster recovery is a strategic step that must be optimized. Increasing global awareness about climate change also has the potential to influence future tsunami patterns, so further research is needed. The tsunami mitigation process also involves environmental management and nature conservation, such as planting mangroves, which can function as a natural barrier to reduce the impact of tsunami waves. The involvement of local communities in this context is important so that solutions are sustainable and can support a balanced ecosystem while protecting human life. With world population levels continuing to increase and human settlements moving closer to coastlines, preparedness and education regarding tsunamis must continue to be improved. Investing in research, technology, and empowering communities will be critical to reducing the risk and impact of this unprecedented disaster.