The Bermuda Triangle is one of the busiest shipping lanes in the world, as such (prior to modern tech such as GPS, Radar as standard) there were a lot of accidents, which in recent years have subsided dramatically. A guy named Laurance Kusche created a report on the region his conclusions are listed below.
* The number of ships and aircraft reported missing in the area was not significantly greater, proportionally speaking, than in any other part of the ocean. * In an area frequented by tropical storms, the number of disappearances that did occur were, for the most part, neither disproportionate, unlikely, nor mysterious; furthermore, Berlitz and other writers would often fail to mention such storms. * The numbers themselves had been exaggerated by sloppy research. A boat listed as missing would be reported, but its eventual (if belated) return to port may not have been reported. * Some disappearances had in fact, never happened. One plane crash was said to have taken place in 1937 off Daytona Beach, Florida, in front of hundreds of witnesses; a check of the local papers revealed nothing.
Kusche concluded that: The Legend of the Bermuda Triangle is a manufactured mysteryÖ perpetuated by writers who either purposely or unknowingly made use of misconceptions, faulty reasoning, and sensationalism.
Book:Lawrence David Kusche (1975). The Bermuda Triangle Mystery Solved.
If I remember right, there have been occurrences of magnetic interference with instruments on board some planes. Without accurate readings of the instruments, the pilots can, with an absence of landmarks, become confused and head out in what they think is the right direction but can be way off course and can even result in aircraft crashing into the sea.
Japan's Dragon's Triangle The "Devil's Sea" and the Dragon's Triangle located in the Philippine Sea off China's eastern coast is known for vanishing ships and seamen similar to the legendary Bermuda Triangle. While sensational theories for the mysterious disappearances speak of extraterrestrials and lost kingdoms under the sea wreaking havoc, others believe that the region displays the same magnetic anomalies as the Bermuda Triangle. The area, which can be marked off on a map by connecting Japan, Taiwan, and Yap Island, has become known as the Dragon's Triangle after a centuries-old Chinese myth. According to the myth, dragons live deep beneath the surface and their movement can suddenly churn up waves, whirlpools, thick fog, and sudden storms.
In 1950, Japanese officials declared the triangle a danger zone for shipping. In 1952, a research vessel, the Kaio Maru No. 5, sent by the Japanese government to investigate the troubled waters, vanished without a trace, and 22 crewmen and nine scientists were lost.
Like the Bermuda Triangle, the Devil's Triangle area may be volatile, subject to sudden weather changes and ocean swells not yet understood. Undersea volcanoes are believed to influence the area's sudden environmental changes. Others cite mikakunin hiko-buttai, Japanese for UFOs.
IMO....the powers-that-be.....know all about the 'vortex' areas on earth....but it's hush hush.
To speculate further.....these areas may be used for secret technology regarding inter-dimensional travel.......and what-not....