When and why does the Bermuda triangle exist?

The Bermuda triangle A.K.A the devil's sea was defined as a part of the Atlantic ocean but after numerous aircraft and ships are said to have disappeared under mysterious circumstances, the triangular section of the ocean started to be called the Bermuda triangle. The name came from the triangular formation ,  the triangle's three vertices are in Miami, Florida peninsula; in Juan, Puerto; and in the mid-Atlantic island of Bermuda. Also the location of where each ship or plane lost communication or crashed formed a triangle on the sea. After that many people stared to call it the Bermuda triangle.