Where did the Boxing Day tsunami take place in 2004?

The Boxing Day tsunami in 2004 primarily affected the Indian ocean region, particularly countries like Indonesia, Thailand, Sri Lanka, India, and the Maldives. It was triggered by a massive undersea earthquake off the coast of Sumatra, Indonesia, with a magnitude of 9.1-9.3. The resulting tsunami caused widespread devastation and loss of life, with hundreds of thousands of casualties reported across the affected areas.