This deadliest tsunami 2004 caused by a 9.0 magnitude earthquake, killing more than 250,000 people in a single day is the most devastating tsunami in modern times, traveled 375 miles (600 km) in a mere 75 min. That’s 300 miles (480 km) per hour, leaving more than 1.7 million homeless affecting 18 countries. Tsunami is an ever-present and real threat for the these islands of the Indian Ocean due to the presence of a tectonic interactive plate. These reviews may help national, regional, and international organizations to prevent such events from occurring again in the future.