The islands of Southeast Asia are sometimes struck by tsunamis because they are located in an area of the world that is prone to seismic activity. The region is located on the Ring of Fire, which is a belt of volcanoes and fault lines that encircles the Pacific Ocean. When these fault lines move, they can cause earthquakes, which can in turn cause tsunamis.

Tsunamis are a series of long, high waves that are caused by the displacement of a large volume of water. They can travel hundreds or even thousands of miles across the ocean, and can reach heights of up to 100 feet. When a tsunami hits land, it can cause widespread damage and loss of life.

The islands of Southeast Asia are particularly vulnerable to tsunamis because they are low-lying and have many coastal communities. In addition, the region is home to a large population, which makes it more susceptible to the effects of a tsunami.

The 2004 Indian Ocean tsunami was a devastating example of the damage that a tsunami can cause. The tsunami was caused by an earthquake off the coast of Indonesia, and it killed over 230,000 people in 14 countries. Many of the deaths were in the islands of Southeast Asia, including Indonesia, Sri Lanka, and Thailand.

Since the 2004 tsunami, there have been a number of efforts to improve tsunami preparedness in Southeast Asia. These efforts include building early warning systems, educating the public about tsunamis, and developing evacuation plans. However, more needs to be done to ensure that the region is adequately prepared for the next tsunami.