Ocean mystery: What are ‘rogue waves’ that are more than 80 ft tall?

Sailors throughout history have described sudden “walls of water” out at sea. These giant ocean waves are no myth. The ocean’s waves range from tiny, fleeting ripples to tremendous, booming curls. And these huge ones are called rogue waves. These can be extremely dangerous. A rogue wave is a wave that is two times the wave height. Watch to know more.