The Bermuda Triangle, sometimes known as the Devil's Triangle, is a 1.5-million-square-mile (4,000,000 kms) area of ocean roughly defined by Bermuda, Puerto Rico, and the southern tip of Florida. Some believe paranormal events occur in this region, in which the laws of physics no longer apply. Though these occurrences remain an enigma, something kind of electromagnetic anomaly does occur in this region which has affected ships and airplanes for centuries. One can only speculate based on reported events. Major planetary grid points include the Bermuda Triangle. Located on the 80th degree longitude, the Bermuda Triangle is one of the two areas on Earth where a compass will point at true north rather than magnetic north. This compass variation can be as much as 20 degrees, enough to throw one catastrophically off course. The other is the Devil's Sea.