500
The Bermuda Triangle = an area in the Atlantic Ocean (between Bermuda, Puerto Rico, and Florida), where ships and planes have mysteriously disappeared since the 1940's. More than 1000 ships and planes have disappeared in the triangle area over the past five centuries and continue to do so. Many believe that the Devil is at play here and therefore call the area also as Devil's Triangle. What could have caused these ships and planes to disappear? (2 sentences)
It could have been caused my Methane Gas. Methane Gas trapped under the sea floor can erupt, as a result can lower the water density and cause ships to sink. Even planes flying over it, can catch fire and get completely destroyed by such gas blowout.