
The , also known as the Devil's triangle, the Dragon's Triangle, the Formosa Triangle and the Pacific
Bermuda Triangle
The Bermuda Triangle, also known as the Devil's Triangle, is a loosely defined region in the North Atlantic Ocean, roughly bounded by Florida, Bermuda, and Puerto Rico. Since the mid-20th century, it has been the focus of an urban legend sug ...
, is a region of the
Pacific
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is bounded by the cont ...
, south of
Tokyo
Tokyo, officially the Tokyo Metropolis, is the capital of Japan, capital and List of cities in Japan, most populous city in Japan. With a population of over 14 million in the city proper in 2023, it is List of largest cities, one of the most ...
. The Devil's Sea is sometimes considered a
paranormal
Paranormal events are purported phenomena described in popular culture, folk, and other non-scientific bodies of knowledge, whose existence within these contexts is described as being beyond the scope of normal scientific understanding. Not ...
location, though the veracity of these claims has been questioned.
Description
The Japanese word ''ma no umi'' (translated as devil sea, troublesome sea, or dangerous sea) has been widely used to describe dangerous marine locations around the world. This means that there are many locations that the Japanese call ''ma no umi.''
In August of 1945 a
Mitsubishi A6M Zero
The Mitsubishi A6M "Zero" is a long-range carrier-capable fighter aircraft formerly manufactured by Mitsubishi Aircraft Company, a part of Mitsubishi Heavy Industries. It was operated by the Imperial Japanese Navy (IJN) from 1940 to 1945. The ...
supposedly went missing. A distress radio transmission from Zero F
Wing Commander pilot
Shiro Kawamoto crossing the Triangle near the end of the war created more questions than answers. The last thing his message said was "...something is happening in the sky...the sky is opening up-".
On 4 January 1955, Japanese ship ''Shinyo Maru No. 10'' (第十伸洋丸) lost radio contact near
Mikura-jima. Japanese newspapers then began to label the location as ''ma no umi'' until the ship was found safe on 15 January.
Yomiuri Shimbun
The is a Japanese newspaper published in Tokyo, Osaka, Fukuoka, Fukuoka, Fukuoka, and other major Japanese cities. It is one of the five major newspapers in Japan; the other four are ''The Asahi Shimbun'', the ''Chunichi Shimbun'', the ''Ma ...
showed a map of the sea with points of several other ships that had been lost in recent years, and stated that those ships were lost within the area that the Yokohama Coast Guard Office had classified as a special danger area.
[Yomiuri Shimbun 1955.01.14 morning]
In the U.S., ''
The New York Times
''The New York Times'' (''NYT'') is an American daily newspaper based in New York City. ''The New York Times'' covers domestic, national, and international news, and publishes opinion pieces, investigative reports, and reviews. As one of ...
'' introduced this incident with the term "The Devil's Sea," where nine ships had been lost in perfect weather. Yomiuri Shimbun described the size of the ''ma no umi'' as follows: "From the
Izu islands
The are a group of volcanic islands stretching south and east from the Izu Peninsula of Honshū, Japan. Administratively, they form two towns and six villages; all part of Tokyo Prefecture. The largest is Izu Ōshima, usually called simply Ōsh ...
to east of the
Ogasawara islands; about 200 miles east to west, and about 300 miles north to south, where nine ships were lost in the past five years".
However, two of the nine ships were lost near
Miyake-jima and
Iwo Jima
is one of the Japanese Volcano Islands, which lie south of the Bonin Islands and together with them make up the Ogasawara Subprefecture, Ogasawara Archipelago. Together with the Izu Islands, they make up Japan's Nanpō Islands. Although sout ...
, about 750 miles apart.
In 1974, American
paranormal
Paranormal events are purported phenomena described in popular culture, folk, and other non-scientific bodies of knowledge, whose existence within these contexts is described as being beyond the scope of normal scientific understanding. Not ...
writer
Charles Berlitz introduced the Devil's Sea in his book ''
The Bermuda Triangle''. Berlitz claimed that "nine modern ships and several hundred crews were lost without traces between 1950 and 1954; in 1955, the Japanese government sent ''
Kaiyo Maru No 5'' to the sea for investigating unexplained ship losses, but this ship vanished as well" ... "After the incident, Japanese authorities have labeled the sea as a danger zone."
In 1989, Berlitz claimed that the Devil's Sea is also called the Dragon's Triangle in his book ''The Dragon's Triangle''. Berlitz continued by theorizing that five Japanese military vessels disappeared while on maneuvers near Japanese shores in early 1942.
Criticisms

In 1975, American author
Larry Kusche published ''The Bermuda Triangle Mystery Solved'', debunking the Devil's Sea legend. Kusche sent letters to government offices which were related to the sea, but nobody knew about the Devil's Sea or such a danger area. The actual danger zone where the Maritime Safety Agency of Japan warned not to approach was only 10 miles to
Myōjin-shō.
The ''Kaiyo Maru No. 5'' was sent to Myōjin-shō for investigating activity of an undersea volcano, and lost in 1952. The loss of the Kaiyo Maru was accounted for: undersea volcano eruption. One of eight other lost ships also was accounted for. Most of the nine ships were small fishing boats with poor or no radio. The weather was not perfect.
In 1995, Kusche's research claimed that Berlitz's military vessels were actually fishing vessels, and some of those listed by Berlitz sank outside the area defined by the Dragon's Triangle. Kusche also wrote that the Japanese research vessel carried not 100 personnel, but only 31 and that an undersea volcano destroyed it on 24 September 1952.
In
Daniel Cohen's 1974 book ''
Curses, Hexes & Spells'', it's reported that legends of the danger of the Dragon's Triangle go back for centuries in Japan. Its most famous casualty was the ''No. 5 Kaiyō-Maru'', a scientific research vessel, which disappeared with the loss of all hands on 24 September 1952. With such a dramatic history, one would expect there to be all sorts of information on the subject, especially in Japan. A search completed by ''
Skeptoid
Brian Andrew Dunning (born 1965) is an American writer and producer who focuses on science and Skeptical movement, skepticism. He has hosted a weekly podcast, ''Skeptoid'', since 2006, and he is an author of a series of books on the subject of s ...
'' author
Brian Dunning for books, newspaper, and magazine articles on the Dragon's Triangle came up completely empty, until a full 20 years after the loss of the ''Kaiyō-Maru''. Apparently, the story (even the very existence of this legendary named region) was not invented until very recently.
Research also explores natural environmental changes, as the cause of such controversial anomalies in the Dragon's Triangle. One of these explanations is the vast field of
methane hydrates present on the bottom of the ocean in the Dragon's Triangle area.
Methane clathrate
Methane clathrate (CH4·5.75H2O) or (4CH4·23H2O), also called methane hydrate, hydromethane, methane ice, fire ice, natural gas hydrate, or gas hydrate, is a solid clathrate compound (more specifically, a clathrate hydrate) in which a large a ...
s (methane hydrates gas) will "explode" when it rises above 18 °C (64 °F). Methane hydrate gases are described as icelike deposits that break off from the bottom and rise, forming bubbles on the surface of the water.
These gas eruptions can interrupt
buoyancy
Buoyancy (), or upthrust, is the force exerted by a fluid opposing the weight of a partially or fully immersed object (which may be also be a parcel of fluid). In a column of fluid, pressure increases with depth as a result of the weight of t ...
and can easily sink a ship, leaving no trace of debris. Another explanation for this "paranormal" activity could be the
undersea volcanoes that are very common in this area. It is quite characteristic for small islands in the Dragon's Triangle to frequently disappear and new islands appear due to both volcanoes and seismic activity. Because the location of the Dragon's Triangle is not plotted on any official world map, the area and perimeter vary from one author to another author.
In popular culture
* The 2013 video game ''
Tomb Raider
''Tomb Raider'', known as ''Lara Croft: Tomb Raider'' from 2001 to 2008, is a media franchise that originated with an Action-adventure game, action-adventure video game series created by British video game developer Core Design. The franchise i ...
'' is set on an island in the "Dragon's Triangle", which contains numerous wrecked ships and planes.
* It is revealed in the final book of ''
The Unwanteds'', a
fantasy
Fantasy is a genre of speculative fiction that involves supernatural or Magic (supernatural), magical elements, often including Fictional universe, imaginary places and Legendary creature, creatures.
The genre's roots lie in oral traditions, ...
book series written by
Lisa McMann, that the seven islands traversed throughout the series are located within the Dragon's Triangle.
* The ''
Mononoke
are vengeful spirits (onryō), dead spirits (shiryō), live spirits (ikiryō), or spirits in Japanese classical literature and folk religion that were said to do things like possess individuals and make them suffer, cause disease, or even cause ...
'' series (aired in 2007) second arc called Umibōzu takes place in a luxurious ship that was set off course and left wandering in the Dragon's Triangle.
References
Bibliography
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Scientific survey of Myojin-shoParanormal-encyclopedia.com*
{{coord, 25, N, 137, E, type:waterbody_dim:2000000, display=title
Paranormal triangles
Geography of Tokyo