One of the deadliest quakes in history did not even take place on land. Just before 1 AM on December 26th, 2004, a megathrust earthquake occurred off the coast of Sumatra underwater.
The earthquake itself did not cause any human deaths, but its aftereffects–tsunamis–ended up costing over 230,000 lives.
Due to its location, the earthquake affected nearly 20 countries and displaced 1.69 million people.
Despite not being the deadliest quake in history, its impact was felt worldwide, killing people on vacation as far away as Sweden.
With a magnitude of 9.3, it is also the second largest earthquake ever recorded and caused the planet to vibrate 1 centimeter.