This infographic published on the April 2022 issue of National Geographic Magazine and it explains the science behind the formation of giant ocean waves at Nazaré, on the west coast of Portugal. It is a collaboration piece with cartographers Eric Knight and Rosemary Wardley. Extensive research included interviews with big-wave surfers, scholars specialized in wave measuring and experts from the Portuguese Hydrographic Institute that study the dynamics and geomorphology of the Nazaré submarine canyon. Research also included detailed analysis of video and photography of the area.