The Bermuda Triangle is a loosely defined region of the Atlantic Ocean that has been the subject of popular lore for decades, with numerous stories of ships and aircraft vanishing without a trace. While the area has no official boundaries or government recognition, it has been studied extensively by scientists, and their findings offer a more grounded picture than the legends suggest.
The popular image of the Triangle, typically drawn as a triangle connecting Miami, Bermuda, and Puerto Rico, was popularized by writer Vincent Gaddis in a 1964 article. A decade later, author Charles Berlitz expanded on the idea in a 1974 best-selling book, cementing the mystery in public culture. Estimates of the area’s size vary widely, from about 500,000 to 1.5 million square miles, depending on who is drawing the lines.
Larry Kusche, a librarian at Arizona State University, grew tired of requests for information about the Triangle and decided to investigate the original sources. His 1975 book, “The Bermuda Triangle Mystery Solved,” examined dozens of supposedly inexplicable cases. He found that many stories were based on incomplete research or misreported weather and maritime records.
One of the first stories he examined was largely fabricated. According to legend, a ship called the Ellen Austin encountered a derelict vessel in the Sargasso Sea in 1881, placed a crew aboard, and watched it vanish, along with its new crew. Kusche could not find any records of such an event. Later investigation confirmed the Ellen Austin existed, but no contemporary reports, insurance claims, or newspaper articles mentioned a lost crew or a ghost ship. The earliest known version of the tale appeared in a 1943 book, more than 60 years after the alleged event.
Not all cases collapse under scrutiny, however. The fate of the Carroll A. Deering, a five-masted schooner found deserted off the coast of North Carolina in January 1921, remains unresolved. The ship was discovered aground with its lifeboats, navigation equipment, and crew’s personal belongings missing, yet a meal was still on the stove. A government investigation considered theories of mutiny, piracy, or a collision with another vessel, but none were confirmed. The ship was eventually destroyed with dynamite to clear the shipping lane, preventing modern examination of the wreck.
Other cases have been solved through careful archival work. The SS Cotopaxi, a cargo ship that disappeared in 1925 with 32 people aboard, became one of the Triangle’s most famous mysteries. It was even depicted in the final scene of Steven Spielberg’s 1977 film “Close Encounters of the Third Kind.” In January 2020, marine biologist Michael Barnette, working with the National Oceanic and Atmospheric Administration (NOAA), announced that he had identified the wreck. Using insurance records and underwater measurements, Barnette determined the wreck matched the Cotopaxi’s dimensions. That same year, he also identified another long-missing ship, the Sandra, which had vanished in 1950, using similar research methods.
Weather and human error play a significant role in many cases. In December 1948, a DC-3 passenger plane flying from San Juan, Puerto Rico, to Miami lost contact with air traffic control about 50 miles from its destination. Investigators noted that the aircraft’s batteries had been low on charge before takeoff and that the radio was weak. The pilot decided not to wait for a full recharge, believing the plane’s generators would handle it during flight. A search turned up no wreckage, and the Civil Aeronautics Board could not determine the exact cause, but pointed to mechanical and procedural factors.
Government agencies and insurers have consistently taken a measured view of the region. NOAA has stated that there is no evidence that disappearances occur at a higher frequency in the Bermuda Triangle than in any other comparable area of the ocean. The agency notes that major Atlantic hurricanes and tropical storms pass through the region, and that the Gulf Stream causes sudden and violent weather shifts. The U.S. Coast Guard and Lloyd’s of London have reached similar conclusions. Lloyd’s has kept shipping insurance rates for crossings through the area unchanged since the 1970s, an indication that actuaries have not identified any unusual statistical risk.
Scientists have also studied several physical explanations for the disasters. In the early 20th century, the alignment of true north and magnetic north in parts of the region created the potential for compass navigation errors. More recently, geological surveys have documented the presence of methane hydrates along the nearby Blake Ridge, where the release of trapped gas could theoretically cause localized seabed collapses, although no researcher has confirmed this as a cause of any specific wreck.
The most substantial scientific effort in the region began in earnest in the 2000s and 2010s, when NOAA’s Office of Ocean Exploration conducted systematic surveys of the Blake Plateau, an underwater area roughly 100 miles off the southeastern U.S. coast that partially overlaps the Triangle. The surveys used the ship Okeanos Explorer, equipped with sonar mapping systems and remotely operated vehicles capable of reaching depths of 6,000 meters.
Less well known is the role of the deep-sea submersible Alvin, which conducted four manned dives to the Blake Plateau as part of the broader research effort. Built in 1964 and operated by the Woods Hole Oceanographic Institution, Alvin has a long research history. It helped locate a lost hydrogen bomb off the coast of Spain in 1966, discovered the first known hydrothermal vents near the Galapagos in 1977, and was used to explore the wreck of the Titanic in 1986. In 2022, after a multi-year upgrade, it was certified for depths of 6,500 meters, giving it access to 99 percent of the ocean floor.
The surveys, which included 31 separate sonar mapping missions and 23 submersible dives between 2003 and 2021, produced a remarkable finding. In January 2024, a study published in the journal Geomatics announced that the Blake Plateau is home to the largest known deep-sea coral habitat on Earth. It covers approximately 6.4 million acres, an area larger than the state of Vermont. The study identified 83,908 individual coral mounds, built primarily by the cold-water coral species Desmophyllum pertusum, which has been growing at a rate of only a few millimeters per year for tens of thousands of years.
Unlike tropical corals, these deep-water corals do not rely on sunlight or symbiotic algae and are therefore not subject to bleaching from warm ocean temperatures. Researchers have identified nearly a hundred species of deep-sea fish living among the coral mounds, along with commercially valuable species such as golden crab and wreckfish. Because only a small portion of the area currently has legal protections, researchers have been advocating for stronger conservation measures.
The Bermuda Triangle, as a mystery, has never had formal boundaries or official recognition. Many of its most famous stories have been traced to research errors or inventions. Others remain unexplained but point to ordinary causes such as weather, mechanical failure, or human error. The most significant discovery to come out of the region has not been a lost ship or plane, but a vast living structure on the ocean floor, one that went unnoticed for centuries until scientists began looking carefully.
