The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region between Florida, Bermuda, and Puerto Rico in the southwestern North Atlantic Ocean where, according to an urban legend, a number of aircraft and ships are said to have disappeared under mysterious circumstances. The idea of the area as uniquely prone to …The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region between Florida, Bermuda, and Puerto Rico in the southwestern North Atlantic Ocean where, according to an urban legend, a number of aircraft and ships are said to have disappeared under mysterious circumstances. The idea of the area as uniquely prone to disappearances arose in the mid-20th century, but most reputable sources dismiss the idea that there is any mystery.