Pororoca is a natural phenomenon found in the Amazon region and is also known as "tidal bore" or "bore wave." This term is borrowed from the Portuguese language, and a few other synonyms for the word 'pororoca' include the 'mighty tidal waves,' 'surging river waves,' 'thundering waves,' and 'boisterous billows.' This event occurs when the Atlantic tide meets the Amazon River's incoming currents, causing huge waves that can reach up to 4 meters high. The pororoca is an essential aspect of the Amazonian culture and is celebrated in festivals as it marks the start of the wave-riding season.