At 7.59 am local time on 26 December 2004, a mighty earthquake rocked the floor of the Indian Ocean just northwest of Sumatra, triggering a series of large and powerful tsunamis that killed nearly a quarter of a million people – 168 000 in Indonesia alone. The tsunami decimated towns and cities from Indonesia, Thailand and the north-western coast of Malaysia to Bangladesh, India, Sri Lanka and the Maldives, thousands of kilometres away, and as far as Somalia, Kenya and Tanzania in East Africa.