On Dec 26, 2004, the Indian Ocean tsunami struck more than a dozen countries, killing over 230,000 people.Twenty years on, many are still picking up the pieces of their lives that were destroyed by the disaster. #indianoceantsunami #tsunami | CNA

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