The Tumen River, also known as the Tuman River or Duman River, is a 521-kilometre (324 mi) long river that serves as part of the boundary between China, North Korea (right) and Russia (left), rising on the slopes of Mount Paektu and flowing into the Sea of Japan. The river has a drainage basin of 33,800 km2 (13,100 sq mi).
Wonsan, previously known as Wonsanjin (元山津), is a port city and naval base located in Kangwon Province, North Korea, along the eastern side of the Korean Peninsula, on the Sea of Japan and the provincial capital. The port was opened by Japanese forces in 1880. Before the 1950–1953 Korean War, it fell within the jurisdiction of the then South Hamgyong province, and during the war, it was the location of the Blockade of Wonsan. The population of the city was estimated at 329,207 in 2013. Notable people from Wonsan include Kim Ki-nam, a diplomat and former Vice Chairman of the ruling Workers' Party of Korea.
The Cyclopteridae are a family of marine fishes, commonly known as lumpsuckers or lumpfish, in the order Scorpaeniformes. They are found in the cold waters of the Arctic, North Atlantic, and North Pacific oceans. The greatest number of species are found in the North Pacific. The family name Cyclopteridae derives from the Greek words κύκλος (kyklos), meaning "circle", and πτέρυξ (pteryx), meaning "wing" or "fin", in reference to the circle-shaped pectoral fins of most of the fish in this family.
Korea comprises the Korean Peninsula and 3,960 nearby islands. The peninsula is located in Northeast Asia, between China and Japan. To the northwest, the Yalu River separates Korea from China and to the northeast, the Tumen River separates Korea from China and Russia. The Yellow Sea lies to the west, the East China Sea and Korea Strait to the south, and the Sea of Japan to the east. Notable islands include Jeju, Ulleung, and the Liancourt Rocks.
Lev Semyonovich Berg, also known as Leo S. Berg was a leading Russian geographer, biologist and ichthyologist who served as President of the Soviet Geographical Society between 1940 and 1950.
Palaeospheniscus is an extinct genus of penguins belonging to the subfamily Palaeospheniscinae. These penguins are apparently not closely related to the modern genus Spheniscus.
The blotched sandskate is a species of fish in the family Arhynchobatidae. It is found off the coasts of Argentina, Brazil, and Uruguay. And sometimes in Norway. Its natural habitat is open seas.
The Liancourt Rocks, known in Korea as Dokdo and in Japan as Takeshima, are a group of islets in the Sea of Japan between the Korean Peninsula and the Japanese archipelago administered by South Korea. The Liancourt Rocks comprise two main islets and 35 smaller rocks; the total surface area of the islets is 0.187554 square kilometres and the highest elevation of 168.5 metres (553 ft) is on the West Islet. The Liancourt Rocks lie in rich fishing grounds that may contain large deposits of natural gas. The English name Liancourt Rocks is derived from Le Liancourt, the name of a French whaling ship that came close to being wrecked on the rocks in 1849.
Barbus bergi, the Bulgarian barbel, is a species of ray-finned fish in the genus Barbus, found in eastern Bulgaria and part of European Turkey. It inhabits the river basins of the central and southern Bulgarian Black Sea Coast, including the rivers Provadiya, Kamchiya, Dvoynitsa, Hadzhiyska reka, Aheloy, Aytoska reka, Chukarska reka, Rusokastrenska reka, Sredetska reka, Fakiyska reka, Izvorska reka, Ropotamo, Dyavolska reka, Karaagach, Veleka and Rezovo.
South Korea is a major center of aquaculture production, and the world's third largest producer of farmed algae as of 2020.
The blacksail snake mackerel, known also as the black snoek, is a species of snake mackerel found in the Indo-Pacific from shallow water to a depth of at least 400 m (1,300 ft) where they appear to prefer slopes on seamounts and ridges. They are known for making diel vertical migrations to near-surface waters at night, feeding on fish, squid and crustaceans. This species reaches a total length of 2 m (6.6 ft) though most are around 1 m (3.3 ft). This species is of minor importance to local commercial fisheries.
Cyclopteropsis is a genus of marine ray-finned fishes belonging to the family Cyclopteridae, the lumpfishes or lumpsuckers. These small lumpfishes are found in the North Pacific and Arctic Oceans.
Hyrcanogobius bergi, the Volga dwarf goby, is a species of goby endemic to the Caspian Sea where it occurs in fresh, brackish and marine waters along the coast. Unusual for gobies, this species is almost a fully pelagic fish. H. bergi grows to a length of 3.6 centimetres (1.4 in) SL. This species is also the only known member of its genus. The specific name honours the Soviet zoologist Lev Berg (1876-1950) who described many new species of goby from the Caspian Sea.
Sebastes pachycephalus is a species of marine ray-finned fish belonging to the subfamily Sebastinae, the rockfishes, part of the family Scorpaenidae. It is found in shallow rocky reefs of Northwest Pacific.
Cyclopteropsis brashnikowi is a species of lumpfish native to the Sea of Okhotsk and the Northwest Pacific off of the Kuril Islands, where it is found at a depth of 30 to 303 metres. Adult individuals of the species have been noted to resemble the related species C. popovi, suggesting that the two species names may be synonymous. It is of disputed classification, being considered a species of Eumicrotremus by some authors, although sources such as FishBase, WoRMS, and ITIS do not follow this classification.
Cyclopteropsis inarmatus, also known as the bumpy lumpsucker, is a species of marine ray-finned fish belonging to the family Cyclopteridae, the lumpfishes or lumpsuckers. This fish is found in the North Pacific, where it occurs in the Bering Sea and the Sea of Okhotsk. In the Bering Sea, it can be found between Cape Navarin and Cape Olyutorskiy, whereas in the Sea of Okhotsk it is seen primarily off of the Kamchatka Peninsula. It inhabits a depth range of 76 to 150 m and reaches 6.4 cm in total length. It is a small demersal (bottom-dwelling) fish that may be seen in rocky areas.
Cyclopteropsis jordani, also known as the smooth lumpfish, is a species of lumpfish native to the Arctic and Northwest Atlantic, where it is known from the Kara Sea in Russia and Admiralty inlet in Nunavut, Canada. It is a benthic species found at depths less than 68 m and reaches 6.1 cm in standard length. C. jordani feeds on small invertebrates, including mollusks, crustaceans, and marine worms.
Cyclopteropsis lindbergi is a species of lumpfish native to the Bering Sea, the Sea of Okhotsk, and the Sea of Japan. It is found at a depth range of 20 to 200 m, and it may reach 7 cm in total length.
Cyclopteropsis mcalpini, also known as the Arctic lumpsucker, is a species of lumpfish known only from the Arctic Ocean. It has been found in the Barents Sea and off the coast of northwestern Greenland, where it occurs at a depth range of 109 to 329 m. It is a small fish, growing to 7.5 cm in total length. Arctic lumpsuckers are reported to usually lay between 60 and 70 eggs, which are deposited in protected areas such as empty shells.
Cyclopteropsis popovi is a species of lumpfish native to the Northwest Pacific. It can be found from the Sea of Okhotsk to the Pacific coasts of the northern Kuril Islands. Some specimens of the related species C. brashnikowi suggest that the two might be synonymous, in which case C. brashnikowi would be considered the senior synonym.
