Bermuda Triangle

Many ships and planes have disappeared over the last several years in an area of the Atlantic Ocean commonly referred to as The Bermuda Triangle.  Speculation about the causes of these disappearances has ranged from aliens, to sea monsters, to wormholes.  The National Oceanic and Atmospheric Administration has a few theories to offer which are somewhat more firmly rooted in science: 

http://oceanservice.noaa.gov/facts/bermudatri.html

Although, "oceanic flatulence" is certainly something I wish was science fiction rather than science.