As the 7.8 earthquake shook the surrounding landscape, a chunk – measuring around 2,400 feet by 3,000 feet by 300 feet – dislodged from the top of a cliff, dropping 2,000 feet down into the bay.

Anything that disrupts the sea floor in some way has the potential to generate a tsunami, says James Goff, Professor of Tsunami Science at the University of New South Wales. "The main ones we hear ...

Tsunamis have devastated Earth since the beginning of time, here are some of the largest waves of destruction.

A 200 million-ton landslide landed on the toe of Tyndall Glacier and in the water of Taan Fiord on Oct. 17, 2015, Icy Bay, Alaska. It was detected by seismologists on the other side of the country.

The devastating 2004 Indian Ocean tsunami, caused by a major earthquake under the seafloor north of Aceh in Sumatra, struck five years ago today, killing more than 200,000 people.

Death by drowning was the biggest killer in the 2011 Japan earthquake and tsunami. Since the disaster, scientists have analyzed the massive Tohoku earthquake and tsunami, seeking better ways to ...