🌊 The Deadliest Tsunami in Recorded History On December 26, 2004, the world witnessed the most deadly tsunami ever documented. A massive 9.1–9.3 magnitude undersea earthquake struck off the coast of Sumatra, Indonesia. It was so powerful it shifted the Earth’s axis and created a series of tsunami waves that spread across the Indian Ocean at the speed of a jet plane. Within hours, coastlines in 14 countries were hit — including Indonesia, Sri Lanka, India, Thailand, and the Maldives. The Impact

After a massive earthquake triggered the deadliest tsunami in recorded history, multiple waves hit the coast of Sri Lanka. Both tourists and locals scramble for safety, as the extent of the wave and its destruction become apparent. Discover the power of the human spirit through stories of hope, hardship, and heroism from the 2004 Indian Ocean tsunami. Parts one and two of Tsunami: Race Against Time premiere tonight at 9pm on National Geographic UK. | National Geographic UK