The Bermuda Triangle is one of the most traveled maritime routes in the world. Since more ships cross that particular part of ocean than most other parts of the ocean, it is natural that more wrecks occur there than in other areas of the ocean.
In addition to this, it is an area of the ocean in which there are huge deposits of methane on the ocean floor. There was an interesting television show about this a couple of years ago. If the methane breaks free and rises in a cloud of bubbles to the surface it will have two effects. 1) It will change the density of the ocean, making water less dense, causing ships to sink. 2) It is highly flammable so open flames on the ships can cause fires and explosions, causing them to sink. This has been proposed as an explanation of most of the odd losses associated with the Bermuda Triangle.
