On December 26, 2004, at 7:58 am local time an undersea earthquake with a magnitude of 9.1 approximately 160 km west of the shores of Sumatra (Indonesia) and 30 km below the sea surface triggered tsunamis in the Indian Ocean. They hit the coasts of countries East and West of the epicenter, among them Indonesia, Sri Lanka, India, Thailand, the Maldives, the Seychelles, Myanmar, Malaysia, Bangladesh and reaching as far as Somalia and Tanzania on the African coastline over 6000 km away.
The coastal populations of the affected countries were hit the hardest, suffering deaths, injuries, displacement and the destruction of their livelihoods. Indonesia was affected most, with an estimated number of 170,000 casualties and approximately 500,000 displaced people. The following cartogram shows the distribution of the estimated 230,273 deaths allocated to the country where the deaths occurred, making each country as large as its total share of the people who dies at the 2004 Boxing Day Tsunami:

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