Imagine a day at the beach: sun, sand, and surf, but then, deep under the ocean's surface, an earthquake results in a towering wave up to 100 feet high surging towards the coast at terrifying speeds. When it hits land, this tsunami destroys everything in its path, with no escape, making these disasters one of the most nightmarish in all of the natural world. This episode takes you inside tsunamis that struck off the coast of Sumatra and Japan, two of the deadliest modern disasters of our times.

Imagine a day at the beach: sun, sand, and surf, but then, deep under the ocean's surface, an earthquake results in a towering wave up to 100 feet high surging towards the coast at terrifying speeds. When it hits land, this tsunami destroys everything in its path, with no escape, making these disasters one of the most nightmarish in all of the natural world. This episode takes you inside tsunamis that struck off the coast of Sumatra and Japan, two of the deadliest modern disasters of our times.