The Amur River or Heilong River is a perennial river in Northeast Asia, forming the natural border between the Russian Far East and Northeast China. The Amur proper is 2,824 km (1,755 mi) long, and has a drainage basin of 1,855,000 km2 (716,000 sq mi). If including its main stem tributary, the Argun, the Amur is 4,444 km (2,761 mi) long, making it the world's tenth longest river.
Sakhalin is an island in Northeast Asia. Its north coast lies 6.5 km (4.0 mi) off the southeastern coast of Khabarovsk Krai in Russia, while its southern tip lies 40 kilometres (25 mi) north of Japan's Hokkaido. A marginal island of the West Pacific, Sakhalin divides the Sea of Okhotsk to its east from the Sea of Japan to its southwest. It is administered as part of Sakhalin Oblast and is the largest island of Russia, with an area of 72,492 square kilometres (27,989 sq mi). The island has a population of roughly 500,000, the majority of whom are Russians. The indigenous peoples of the island are the Ainu, Oroks, and Nivkhs, who are now present in very small numbers.
Aigun was a historic Chinese town in northern Manchuria, situated on the right bank of the Amur River, some 30 kilometres (19 mi) south (downstream) from the central urban area of Heihe.
Heihe is a prefecture-level city of northern Heilongjiang province, China, located on the Russian border, on the south bank of the Amur (Heilong) River, across the river from Blagoveshchensk. At the 2020 census, 1,286,401 people lived in the prefecture-level city of whom 223,832 lived in the built-up area made of Aihui District.
Victor Ivanovich Motschulsky, sometimes Victor von Motschulsky was a Russian entomologist mainly interested in beetles.
Parafossarulus manchouricus is a species of freshwater snail with gills and an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae.
Steromphala cineraria is a species of small sea snail, a marine gastropod mollusc in the family Trochidae, the top snails.
Rhodopetoma erosa is a species of sea snail, a marine gastropod mollusk in the family Pseudomelatomidae.
Euthria cornea, common name : the spindle euthria, is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks.
Margarites costalis, common name the boreal rosy margarite or the northern ridged margarite, is a species of sea snail, a marine gastropod mollusk in the family Margaritidae.
Cyclostrema virginiae is a species of sea snail, a marine gastropod mollusk in the family Liotiidae.
Pseudosimnia carnea, common name the dwarf red egg shell, is a species of sea snail, a marine gastropod mollusk in the family Ovulidae, the ovulids, cowry allies or false cowries.
Amuropaludina pachya is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusc in the family Viviparidae.
Amuropaludina is a genus of freshwater snails which have a gill and an operculum, aquatic gastropod molluscs in the family Viviparidae.
Amuropaludina praerosa is a species of freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae.
Choanomphalus maacki is a species of freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids.
Choanomphalus amauronius is a species of freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids.
Maackia raphidia is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Amnicolidae.
Tritia neritea is a species of sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.
Koreoleptoxis amurensis is a species of freshwater snail with an operculum, an aquatic gastropod mollusk in the family Semisulcospiridae.
