Tsunamis waves of local origin, which account for most fatalities due to tsunami worldwide, pose a natural hazard on shores of the Arabian Sea. The main source of this hazard is the Makran subduction zone, an active boundary between converging tectonic plates that slants gently northward beneath the Arabian Sea coasts of Iran and Pakistan. Its seaward edge tracks the foot of the continental slope for a distance of 800 kilometres. Were the zone to break along its entire length, the resulting earthquake might be in a range of magnitude 8.7-9.2, and the ensuing tsunami would likely exceed 10 metres in height along most coasts of northern Oman, southeast Iran, Pakistan, and northwest India

on this subject: Remembering the 1945 Makran tsunami: interviews with survivors beside the Arabian Sea