Where do tsunamis occur?

A tsunami is an incredibly large wave that is caused by underwater volcanic activity or by earthquakes that occur along fault zones underwater. These can cause water levels to rise rapidly and can be incredibly deadly. Tsunamis also do a vast amount of lasting damage to the property and economies of a region. read more

People experiencing a tsunami should remember that the danger may not have passed with the first wave and should await official word that it is safe to return to vulnerable locations. Some tsunamis do not appear on shore as massive breaking waves but instead resemble a quickly surging tide that inundates coastal areas. read more

Scientists estimate that almost three quarter of the world tsunamis occur in the Pacific Ocean, where the megathrusts (subduction zones) are so common (Aleutian Islands, Alaska, Chile, Philippines, Japan etc). read more