When Myths Meet Science: Rogue Waves Explained A rogue wave is a sudden, very large ocean wave that appears much bigger than the others around it. It forms through a process called constructive interference, which happens when two or more smaller waves meet and their crests combine to create one much larger wave. Changes in wind and ocean currents can also push waves together, adding to their size. These powerful waves can rise over 25 meters high and pose serious danger to ships and offshore st