where was the boxing day tsunami

The Boxing Day tsunami occurred on December 26, 2004, triggered by a massive undersea earthquake off the west coast of northern Sumatra, Indonesia. The disaster sent powerful tsunami waves across the Indian Ocean, devastating coastlines in 14–15 countries and resulting in an estimated 230,000 lives lost, with Indonesia, Sri Lanka, India, and Thailand among the hardest hit. The event is also known as the Sumatra–Andaman earthquake and is the deadliest tsunami in recorded history.