A, Map of the Ryukyu Archipelago and Taiwan showing the distribution of the four Hebius species. B, Enlargement of the Central and Southern Ryukyus. Numbers 1–20 indicate sampling localities: 1 = Amamioshima, 2 = Kakeromajima, 3 = Ukejima, 4 = Yorojima, 5 = Tokunoshima, 6 = Okinawajima 7 = Yagajijima, 8 = Kourijima, 9 = …Japanese Ryukyu dog breed is one of the oldest breeds in Japan, with a long history of over 1000 years. This breed of dog was developed in Okinawa Island in the Ryukyu Kingdom, where it has been kept alive for many centuries. The breed is unique in its characteristics and physical traits. It is also rare in comparison to other breeds in the …Dec 20, 2023 · While searching our database we found 1 possible solution for the: Health regimen modeled on the cuisine of Japans Ryukyu Islands crossword clue. This crossword clue was last seen on December 20 2023 LA Times Crossword puzzle. The solution we have for Health regimen modeled on the cuisine of Japans Ryukyu Islands has a total of 11 letters. Answer. The Ryukyu robin ( Larvivora komadori) is a bird endemic to the Ryūkyū Islands, of Japan. [2] The Okinawa robin ( Larvivora namiyei) previously was considered a subspecies. [3] The specific name komadori is, somewhat confusingly, the common name of its relative the Japanese robin in Japanese . The Ryukyu robin, together with the Japanese ...Natural selection signatures across Japanese subpopulations are under-explored. Here we conducted genome-wide selection scans with 622,926 single nucleotide polymorphisms for 20,366 Japanese individuals, who were recruited from the main-islands of Japanese Archipelago (Hondo) and the Ryukyu Archipelago (Ryukyu), representing …The Ryukyu Kingdom was influenced by two nearby superpowers - Japan and China - but with economic clout through maritime trade, its rulers made a land that …The English and Japanese uses of the term "Ryukyu" differ. In English, the term Ryukyu may apply to the entire chain of islands, while in Japanese Ryukyu usually refers only to the islands that were previously part of the Ryūkyū Kingdom after 1624. Nansei Islands. Nansei-shotō (南西諸島) is the official name for the whole island chain in ...Mar 15, 2013 · Ryukyu Mura is a collection of old houses assembled in a theme park in Onna-son, the middle of Okinawa Honto just over one hour north of Naha by car or bus. Take a step back in time to Okinawa a hundred years ago, where buffalo driven carts and old villages milling sugar cane were more common place. While parts of the park appear a bit cheesy ... Palaeogeographic reconstruction of the 1.55 Ma synchronous isolation of the Ryukyu Islands, Japan, and Taiwan and inflow of the Kuroshio warm current. Soichi Osozawa Department of Earth Sciences, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan Correspondence [email protected], Ryuichi Shinjo …Japan is a member of both the G7 and the G20.. A member state of the United Nations since 1956, Japan is one of the G4 countries seeking reform of the Security Council. [125] Japan is a member of the G7, APEC, and "ASEAN Plus Three", and is a participant in the East Asia Summit. [126] It is the world's fifth-largest donor of official development …In late August the Japanese daily Yomiuri Shimbun reported that the Japan Self-Defense Forces (JSDF) intend to stage their first-ever island defense exercises in December. The maneuvers will be held in concert with U.S. Navy forces to refine plans for recapturing the lightly protected Ryukyu Islands from a hostile—presumably …Profile. The Ryūkyūans are a group of indigenous peoples living in the Ryūkyū archipelago, which stretches southwest of the main Japanese island of Kyūshū towards Taiwan. The largest and most populated island of the archipelago, Okinawa Island, is actually closer to Manila, Taipei, Shanghai and Seoul than it is to Tokyo.All-Okinawa Eisa Festival (全島エイサー祭り, Zento Eisa Matsuri (August 2024) The All-Okinawa Eisa Festival is an annual event held in Okinawa, Japan, and showcases the unique Eisa culture of the region. Eisa is a type of traditional Okinawan dance, usually accompanied by drums and other instruments, and it has become a …Profile. The Ryūkyūans are a group of indigenous peoples living in the Ryūkyū archipelago, which stretches southwest of the main Japanese island of Kyūshū towards Taiwan. The largest and most populated island of the archipelago, Okinawa Island, is actually closer to Manila, Taipei, Shanghai and Seoul than it is to Tokyo.Visit Okinawa Japan. The Ryukyu Shikaku Mame, or winged beans, are a subtropical plant and in Japan, they are mainly grown and harvested in Okinawa. These beans are called Urizun Mame in Okinawa, and when cut, the cross-section has a unique shape. Unlike other beans, they have a square, wing-like shape and look like the letter “X”.The Ryukyu Archipelago is an assemblage of many continental islands and a few oceanic islands scattered between Kyushu of Japan, and Taiwan. Recent changes in geographic ranges were reviewed for ...Abstract . My recent book, Maritime Ryukyu, 1050-1650, is a revisionist history of the Ryukyu islands. Adopting the interdisciplinary approaches of recent Japanese scholarship, Maritime Ryukyu presents a new history of the region, treating the Ryukyu islands not as a unitary, natural political community but as locations within a …Japan, island country lying off the east coast of Asia.It consists of a great string of islands in a northeast-southwest arc that stretches for approximately 1,500 miles (2,400 km) through the western North Pacific Ocean.Nearly the entire land area is taken up by the country’s four main islands; from north to south these are Hokkaido (Hokkaidō), …Jul 3, 2018 · The Nansei-Shoto Trench, sometimes called Ryukyu Trench, is a typical subduction zone located along the southeastern edge of the Ryukyu Arc, Japan. Although the Philippine Sea Plate subducts northwestward along the trench, major historical subduction earthquakes had scarcely been known, and seismic coupling had been thought to be weak. Okinawa was once its own country. Shuri Castle, the palace of the Ryukyu Kingdom between 1429 and 1879, before it was largely destroyed by a fire in 2019. Not many know this but Okinawa is the last …Founded 2003 Address Yamashita-cho 900-0027 Naha Country Japan Phone +81 (98) 936 0077T. Suzuki. 76'. H. Shirai. 2 - 1. FT. 2 - 1. Get the latest FC Ryukyu vs Gamba Osaka live score in the J.League Cup from LiveScore.com.Oct 15, 2009 · 1. Introduction [2] On 24 April 1771, an earthquake occurred near Yaeyama Islands, which constitutes the southern part of the Ryukyu Islands, Okinawa, Japan. While the ground shaking was relatively weak, the following tsunami was devastating. The biogeographical history of Asian keelback snakes of the genus Hebius (Squamata: Colubridae: Natricinae) in the Ryukyu Archipelago, Japan. Takuma Kaito, Corresponding Author. Takuma Kaito. Graduate School of Engineering and Science, University of the Ryukyus, Senbaru 1, Nishihara, Okinawa, 903-0213 Japan. …After Ryukyu came under control of mainland Japan in 1606, the kingdom contributed lacquerware to Japan’s Tokugawa shogunate while retaining Ryukyu lacquerware’s unique characteristics. Since 1879, when the Ryukyu Kingdom was finally abolished, Ryukyu lacquerware has become increasingly produced by private …Ryukyu kingdom story. Okinawa Prefecture – once called the Ryukyu Kingdom – has formed its own unique culture. The cuisine and performing arts that used to entertain Chinese envoys (sapposhi), served the royal …Adopting the interdisciplinary approaches of recent Japanese scholarship, Maritime Ryukyu presents a new history of the region, treating the Ryukyu islands not …History. Japan’s 1609 Conquest of Ryukyu. 14 minute read. Published on 01 August 2021, 03:16 +02:00. Author. Kane Dane. The Ryukyu Kingdom was a feudal …Dec 20, 2023 · While searching our database we found 1 possible solution for the: Health regimen modeled on the cuisine of Japans Ryukyu Islands crossword clue. This crossword clue was last seen on December 20 2023 LA Times Crossword puzzle. The solution we have for Health regimen modeled on the cuisine of Japans Ryukyu Islands has a total of 11 letters. Answer. Japan opened its ports after signing the Treaty of Kanagawa with the US in 1854 and began to intensively modernize and industrialize. During the late 19th and early 20th centuries, Japan became a regional power that was able to defeat the forces of both China and Russia. It occupied Korea, Formosa (Taiwan), and southern Sakhalin Island.Abstract . My recent book, Maritime Ryukyu, 1050-1650, is a revisionist history of the Ryukyu islands. Adopting the interdisciplinary approaches of recent Japanese scholarship, Maritime Ryukyu presents a new history of the region, treating the Ryukyu islands not as a unitary, natural political community but as locations within a …from kume island, ryukyu, japan. a risa s eki, 1,2 y usuke y okoy ama, 1,2,3 * a tsushi s uzuki, 4 y ut a k aw akubo, 1,2 t akashi o kai, 4. y osuke m iy airi, 1 h iroyuki m atsuzaki, 5 n aoko n ...The Japanese Government, after incorporating the Ryukyu Islands into Okinawa Prefecture, placed the Senkaku Islands in the same prefecture after 1885 surveys (conducted according to the established methods of duly acquiring territorial sovereignty under international law) which showed the islands as terra nullius, i.e., uninhabited with …The invasion of Ryukyu (琉球侵攻, Ryūkyū Shinkō) by forces of the Japanese feudal domain of Satsuma took place from March to May of 1609, and marked the beginning of the Ryukyu Kingdom's status as a vassal state under the Satsuma domain. The invasion force was met with stiff resistance from the Ryukyuan military on all but one island during the …Ryukyu kasuri is a textile made in Okinawa prefecture. It is made mostly from silk and dyed with both plant and synthetic dyes using a kasuri* or resist-dyeing technique. This craft features over six hundred different kinds of patterns inspired by the nature and animals of Okinawa and the main products are various kimono. In a way, Ryukyu served as a cultural and physical bridge between China and Japan. Ryukyu, and especially the city Naha in Okinawa, was an important trading hub that connected Japan, China, and Southeast Asia. Thanks to its location and the entrepreneurial spirit of local people, Ryukyu’s trade routes spanned from Siam (Thailand) to Siberia. The house shrew (Suncus murinus–S. montanus species complex) colonized regions across southern Asia and the Indian Ocean following human activity. The house shrew is distributed on islands of the Ryukyu Archipelago, the southernmost part of Japan, but the evolutionary history of the shrew on those islands and possible associations …Japan, island country lying off the east coast of Asia.It consists of a great string of islands in a northeast-southwest arc that stretches for approximately 1,500 miles (2,400 km) through the western North Pacific Ocean.Nearly the entire land area is taken up by the country’s four main islands; from north to south these are Hokkaido (Hokkaidō), …As a centuries-old dyeing technique, Ryukyu bingata is an intangible cultural asset of Okinawa, representing the archipelago’s diplomatic history as well as its subtropical climate with vivid colors on natural fabrics. Today, the passionate revival of Okinawa’s traditional stenciled dyeing technique expresses a new generation’s dedication to fine …Okinawa was once its own country. Shuri Castle, the palace of the Ryukyu Kingdom between 1429 and 1879, before it was largely destroyed by a fire in 2019. Not many know this but Okinawa is the last …In 1879, Japan declared its intention to annex the Ryukyu Kingdom. China protested and asked former U.S. President Ulysses Grant , then on a diplomatic tour of Asia, to …With a strategic location in the first island chain, Ryukyu was an important trade hub between ancient China and Japan. Okinawa now hosts more than 70 per cent of US military forces in Japan. Its ...Introduction. The Rhacophorid treefrog, Polypedates leucomystax (Gravenhorst, 1829), is a medium-to-large arboreal species indigenous to Southeast Asia. It was unintentionally introduced to the Ryukyu Archipelago in southwestern Japan from the Philippines (Kuraishi et al., 2009).Since its first confirmation in Okinawajima in 1964 …Jul 1, 2023 · With a strategic location in the first island chain, Ryukyu was an important trade hub between ancient China and Japan. Okinawa now hosts more than 70 per cent of US military forces in Japan. Its ... Ryukyuan, Japanese. The Okinawa Islands (沖縄諸島, Okinawa Shotō, or 沖縄群島, Okinawa Guntō) are an island group in Okinawa Prefecture, Japan and are the principal island group of the prefecture. [1] The Okinawa Islands are part of the larger Ryukyu Islands group and are located between the Amami Islands of Kagoshima Prefecture to ...Caligoplagusia okinawa n. gen. & n. sp., assigned to the brachyuran family Plagusiidae Dana, 1851 is described on the basis of a male and a female specimens collected from a semi-submerged marine cave on the limestone shore of Okinawa Island, Ryukyu Islands, southwestern Japan. The new monotypic genus is most similar to …Special Japanese overprints were produced for communication between the camps. These remain some of the rarest Ryukyu Island stamps and often fetch high prices at auction. Other notable Ryukyu Islands collectors’ stamps include a 1950 airmail set, which celebrated the ultimate end of the war and featured a dove flying over a map of the islands.China - Japan, Ryukyu, Islands: Three years after the Meiji Restoration of 1868—which inaugurated a period of modernization and political change in Japan—a commercial treaty was signed between China and Japan, and it was ratified in 1873. Understandably it was reciprocal, because both signatories had a similar unequal status vis-à-vis the Western …Extending about 1,200 km southwest from Japan’s home islands towards Taiwan, the Ryukyu archipelago forms a natural boundary between the East China Sea and the rest of the Pacific Ocean.Drift disseminules on the drift line, seedlings on the hightide line, and young plants of woody species in the herb zone were observed, being abundant on the coasts of the Ryukyu Islands. The Kuroshio Current carries these disseminules from islands where these species form part of the tropical coastal vegetation.Traditional Ryukyu village . The island’s most striking feature is its beautifully preserved Ryukyu village. Limestone walls with hibiscus and bougainvillea hedgerows skirt wooden houses with traditional red-tiled roofs. ... Most of the accommodations on the island are cozy guesthouses and minshuku—Japanese-style family-run B&Bs. For visitors who wish to …FC Ryukyu previous match was against Giravanz Kitakyushu in J3 League, the match ended with result 2 - 0 (Giravanz Kitakyushu won the match). FC Ryukyu fixtures tab is showing the last 100 football matches with statistics and win/draw/lose icons. There are also all FC Ryukyu scheduled matches that they are going to play in the future. The massive stone structure is the tomb of the successive royal families of the Kingdom of Ryukyu, and the inside of the tomb is paved with coral reef fragments. At the center of the structure and in the east and west towers stand lion statues called Shisa. The Japanese name Ryukyu-hatanpo has been commonly used for the species in the Ryukyu Archipelago, and is a factor in the taxonomical confusion with Japanese Pempheris. This Japanese name was ...The Ryukyu Islands are a chain of islands distributed over 1000 km along the southernmost part of the Japanese Archipelago and divided into four primary island groups: the Amami Islands, the ...Explore the ruins and restored castles of the Ryukyu kings, and visit magnificent beaches and coastlines with an amazing array of coral and undersea life. Come for whale …Apr 16, 2024 · Japan opened its ports after signing the Treaty of Kanagawa with the US in 1854 and began to intensively modernize and industrialize. During the late 19th and early 20th centuries, Japan became a regional power that was able to defeat the forces of both China and Russia. It occupied Korea, Formosa (Taiwan), and southern Sakhalin Island. Head to Shurijo Castle Park to see the former beating heart of the prosperous Ryukyu Kingdom. Explore Shuri on foot to appreciate the area’s traditional architecture, and stroll down the cobblestone lane known as Kinjo Stone Road. Visit a distillery to sample awamori, Okinawa’s signature spirit. About Shuri. Shurijo Castle: the heart. Mar 11, 2021 · Japan's mysterious underwater 'city'. Below the waves off the coast of Japan’s Ryukyu Islands, a series of curious pyramid-like formations have captivated divers and geologists since the site ... The Nansei-Shoto (Ryukyu) Trench is a part of the subduction margins of the Philippine Sea Plate. The seismic potential at the trench, especially in the central portion, had been thought to be low. On the contrary, our seafloor crustal deformation measurements depicted a zone of strong coupling between the overriding and subducting plates at the …Ryukyu Karate in Okinawa. Practice authentic karate in its homeland. Okinawa is the birthplace of karate, a sport with countless practitioners across the world. Learn the local …Description: group of islands under Japanese control, consisting of the Sakishima Islands, the Okinawa Islands and sometimes the Amami Islands. Categories: island group, …from kume island, ryukyu, japan. a risa s eki, 1,2 y usuke y okoy ama, 1,2,3 * a tsushi s uzuki, 4 y ut a k aw akubo, 1,2 t akashi o kai, 4. y osuke m iy airi, 1 h iroyuki m atsuzaki, 5 n aoko n ...Jul 13, 2022 · *First broadcast on July 14, 2022. Okinawa Prefecture is a group of subtropical islands in the far south of Japan. It was previously a prosperous maritime trading state called the Ryukyu Kingdom. The Ryukyu Islands are a chain of islands distributed over 1000 km along the southernmost part of the Japanese Archipelago and divided into four primary island groups: the Amami Islands, the ...The 1771 Great Yaeyama Tsunami (also called 明和の大津波, the Great Tsunami of Meiwa) was caused by the Yaeyama Great Earthquake at about 8 A.M. on April 24, 1771, south-southeast of Ishigaki Island, part of the former Ryūkyū Kingdom and now part of present-day Okinawa, Japan.According to records, 8,439 people were killed on Ishigaki …In late August the Japanese daily Yomiuri Shimbun reported that the Japan Self-Defense Forces (JSDF) intend to stage their first-ever island defense exercises in December. The maneuvers will be held in concert with U.S. Navy forces to refine plans for recapturing the lightly protected Ryukyu Islands from a hostile—presumably …China - Japan, Ryukyu, Islands: Three years after the Meiji Restoration of 1868—which inaugurated a period of modernization and political change in Japan—a commercial treaty was signed between China and Japan, and it was ratified in 1873. Understandably it was reciprocal, because both signatories had a similar unequal status vis-à-vis the Western … Ryukyu Japan Karate, is dedicated to the teaching of traditional Okinawan Karate local comunity Poway, Rancho Bernardo, Rancho Panasquitos and the greater San Diego. Our dojo focus on both compition sport and also the training of Karate for Discipline, Teamwork, and Leadership. We are the only Karate studio that you can fine in the greater San Diego area that has such a big group of competitor ... Jan 5, 2017 · Behold the Ryukyu Islands, an archipelago that stretches from the southwestern tip of Japan to Taiwan. You may hear buzz about them soon, because they just landed a spot on the New York Times’s famous annual roundup of 52 places to go this year. While they’re last on that list, the Ryukyus are certainly first on ours: The Ryukus are made up ... Japan opened its ports after signing the Treaty of Kanagawa with the US in 1854 and began to intensively modernize and industrialize. During the late 19th and early 20th centuries, Japan became a regional power that was able to defeat the forces of both China and Russia. It occupied Korea, Formosa (Taiwan), and southern Sakhalin Island.Special Japanese overprints were produced for communication between the camps. These remain some of the rarest Ryukyu Island stamps and often fetch high prices at auction. Other notable Ryukyu Islands collectors’ stamps include a 1950 airmail set, which celebrated the ultimate end of the war and featured a dove flying over a map of the islands.Two new species of Gastrodia (Gastrodieae, Epidendroideae, Orchidaceae) from Okinawa Island, Ryukyu Islands, Japan, Phytotaxa: Vol. 302 No. 3: 4 April 2017 KENJI SUETSUGU, SHINGO KAIDA, TIAN-CHUAN HSU, SHINICHIRO SAWA, Lecanorchis moritae (Orchidaceae, Vanilloideae), a new mycoheterotrophic species from Amami …Mar 4, 2022 · Built in the late 13th century, Nakijin-jo Castle was once the stronghold of Hokuzan, the nation that comprised the region of Northern Okinawa and beyond. After a military campaign finally unified the northern, central and southern kingdoms, the Ryukyu Kingdom was born in 1428. Unlike most other castles built with the softer coral-based Ryukyu ... The Volcano and Ryūkyū Islands campaign was a series of battles and engagements between Allied forces and Imperial Japanese forces in the Pacific Ocean campaign of World War II between January and June 1945.. The campaign took place in the Volcano and Ryukyu island groups. The two main land battles in the campaign were the Battle of Iwo …Mar 15, 2013 · Ryukyu Mura is a collection of old houses assembled in a theme park in Onna-son, the middle of Okinawa Honto just over one hour north of Naha by car or bus. Take a step back in time to Okinawa a hundred years ago, where buffalo driven carts and old villages milling sugar cane were more common place. While parts of the park appear a bit cheesy ... Internal transcribed spacer regions of ribosomal DNA were sequenced, and new species-specific primers were designed to simplify the molecular identification of five morphologically related subgenus Stegomyia mosquito species--Aedes aegypti, Ae. albopictus, Ae. riversi, Ae. flavopictus, and Ae. daitensis--found in the Ryukyu Archipelago, Japan. Ryukyu-retto or Nansei-shoto [southwest group], archipelago (1990 est. pop. 1,500,000), c.1,850 sq mi (4,790 sq km), SW Japan, in the W Pacific Ocean. The chain stretches about 650 mi (1,050 km) between Taiwan and Japan, separating the East China Sea from the Philippine Sea. The Ryukyus are composed of three principal groups: they are, from ... The military of the Ryukyu Kingdom defended the kingdom from 1429 until 1879. It had roots in the late army of Chūzan, which became the Ryukyu Kingdom under the leadership of King Shō Hashi.The Ryukyuan military operated throughout the Ryukyu Islands, the East China Sea, and elsewhere that Ryukyuan ships went.Ryukyu primarily fought with other …
Specialties: A top competition Dojo, we teach respect, discipline, teamwork and leadership. Ryu Kyu Japan Karate-DO is one of AAU 's Top Karate Schools in the US. We are Proud to be recognized by such a prestigious organization like AAU Karate. Established in 1979. Ryuei Ryu originated from Okinawa. In 1979 Arashiro Sensei came to the United States and started teaching Ryuei Ryu. There are now ... . Pixel 8 pro colors
With a strategic location in the first island chain, Ryukyu was an important trade hub between ancient China and Japan. Okinawa now hosts more than 70 per cent of US military forces in Japan. Its ...Palaeogeographic reconstruction of the 1.55 Ma synchronous isolation of the Ryukyu Islands, Japan, and Taiwan and inflow of the Kuroshio warm current. Soichi Osozawa Department of Earth Sciences, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan Correspondence [email protected], Ryuichi Shinjo … News. April 8,2024 Safety and Health Manual. March 5,2024 Regarding the University of the Ryukyus Entrance Ceremony for the Academic Year 2024. February 9,2024 Regarding the University of the Ryukyus Graduation Ceremony for the Academic Year 2023. Ryukyuan architecture ( Japanese: 琉球建築, romanized : りゅうきゅうけんちく) is the architecture in Ryukyu islands (the Okinawa Prefecture and the Amami Islands in Kagoshima Prefecture, Japan). The history of Ryukyuan architecture dates back to the Shell Mound Period that lasted between 2000–1000 BC. During this period, houses ... Ryukyu Golden Kings (琉球ゴールデンキングス, Ryūkyū Gōruden Kingusu) are a Japanese professional basketball team based in Okinawa City, Okinawa. They compete in the B.League , the top-tier professional basketball league of Japan . Rice (Oryza sativa L.) is a major crop, and blast (Pyricularia oryzae Cavara) has been the most serious disease in Japan. Ninety-seven rice blast isolates were collected from the Ryukyu Archipelago, including Okinawa Main Island (OK) and Yaeyama Islands (YA), in Japan's southern region. The pathogenicities of blast isolates were clarified by …Apr 25, 2017 · The Ryukyu Islands are a chain of islands (archipelago) in Japan that stretches for a distance of 1,100 kilometers southwestwards from the Japanese island of Kyushu towards northeastern Taiwan. The Ryukyu Islands cover a land area of approximately 3,090 square kilometers, and this area demarcates the boundary between the Philippine Sea in the ... The Gusuku Sites and Related Properties of the Kingdom of Ryukyu (琉球王国のグスク及び関連遺産群, Ryūkyū ōkoku no gusuku oyobi kanren'isangun) is an UNESCO World Heritage Site which consists of nine sites all located in the Okinawa Prefecture, Japan. The heritage sites include two utaki (or sacred sites, one a gate and the ...Today, as the term "Yamato" has a strong negative and racist connotation, the famous 和 wa is widely used, with the 人 jin suffix, used for a population, when we want to distinguish Japanese-Japanese from Ainu-Japanese, or Ryukyu-Japanese. Ainu. アイヌ Ainu people were living on the archipelago before the Yamato arrived from the …Japan, island country lying off the east coast of Asia.It consists of a great string of islands in a northeast-southwest arc that stretches for approximately 1,500 miles (2,400 km) through the western North Pacific Ocean.Nearly the entire land area is taken up by the country’s four main islands; from north to south these are Hokkaido (Hokkaidō), …The Ryukyu island arc is associated with a back-arc spreading rift, the Okinawa trough, which start rifting at 1.55 Ma (Osozawa et al. 2012a). Three tectonic valleys, the Takara, Kerama and Yonaguni straits, divide the islands into the Japan, northern Ryukyu (Okinawa and Amami), southern Ryukyu (Yaeyama), and Taiwan … The Ryukyu Trench (琉球海溝, Ryūkyū kaikō), also called Nansei-Shotō Trench, is a 1398 km (868 mi) [1] long oceanic trench located along the southeastern edge of Japan 's Ryukyu Islands in the Philippine Sea in the Pacific Ocean, between northeastern Taiwan and southern Japan. The trench has a maximum depth of 7460 m (24,476 ft). [1] Yonaguni Jima is an island that lies near the southern tip of Japan's Ryukyu archipelago, about 75 miles (120 kilometers) off the eastern coast of Taiwan. The site is very popular among divers..