The latest tsunami that rocked the world is a natural event that is greatly feared and often causes huge losses. In recent years, various regions around the world have felt the impact of these terrible ocean waves. In March 2021, a tsunami hit Japan after a 7.0 magnitude earthquake occurred off the coast of Fukushima. Waves as high as 1.5 meters succeeded in destroying infrastructure and causing massive evacuations in the surrounding area. However, the tsunami was still far from the scale of the disaster that occurred in Indonesia. In history, Indonesia has been one of the countries with the highest potential for tsunamis because of its location on the Pacific Ring of Fire. One of the most terrifying tsunamis occurred on December 26, 2004, when a 9.1 magnitude earthquake rocked the Indian Ocean. Waves as high as 30 meters attacked the coast of Aceh, causing more than 230,000 people to die and entire cities to be destroyed in an instant. This event changed the paradigm regarding tsunami preparedness throughout the world. In 2018, Sulawesi Island was the victim of a tsunami due to the earthquake that rocked Palu. The resulting wave wiped out surrounding villages and killed thousands of people. This reminds us of the importance of a more effective tsunami early warning system to protect communities from similar disasters. Recent research shows that climate change can influence the frequency and intensity of tsunamis. Although there is no direct evidence to suggest this connection, global warming can trigger geological activity that has the potential to cause tsunamis. Therefore, ongoing research is urgently needed to understand the impact of climate change on these natural disasters. Many countries, including Japan and Indonesia, have developed infrastructure to combat tsunamis. The use of advanced technology such as seabed sensors and early warning systems has helped reduce the loss of life. Community education programs about what to do when signs of a tsunami occur are also a priority. Websites and smartphone apps now provide up-to-date information about potential tsunamis, allowing people to prepare well. Increasing awareness of the signs of a tsunami, such as strong earthquakes and changes in sea levels, is an important step in protecting communities. The tsunami is a reminder that nature has extraordinary power. By educating the public and improving the warning system, it is hoped that the impact of the tsunami can be minimized. Preparedness and rapid response are key to saving lives and reducing losses. A change in view of tsunamis as completely unexpected natural disasters needs to be developed so that society can be better prepared to face potential threats in the future.