Around 130 million people in Mediterranean coastal areas are at risk of a devastating tsunami, which could be triggered by even a moderate earthquake. Scientists have found that a tsunami resulting from a magnitude 7 earthquake beneath Sicily or Crete would see Italy, Greece and Libya all hit by the waves. Their computer simulation found that low-lying areas - up to five metres above sea level - would be swamped by the waves and up to 1.35 sq miles of Crete would be left completely underwater.