Fifty-six volcano tops fence Okhotsk from the Pacific
The Kuril Islands stretch about 1,300 kilometres from Hokkaido toward Kamchatka—fifty-six mostly volcanic summits that divide the Sea of Okhotsk from the North Pacific. Russia has administered them since the 1945 Soviet occupation; Japan still claims the southern four.
Ainu speakers used kur for “man,” a root that may echo other Ainu island names. Stratovolcanoes rise where the Pacific Plate dives beneath the Okhotsk Plate along the Kuril Trench some 200 kilometres east. Alaid on Atlasov Island peaks at 2,339 metres—Sakhalin Oblast’s high point—and Japanese artists once treated its cone like a northern Fuji.
Climate runs severe: stormy winters, foggy summers, and 1,020–1,270 millimetres of precipitation, much as snow. Vegetation grades from northern tundra to spruce–larch forests farther south. Habitats range from beaches, cliffs and gravelly streams to grasslands, alpine tundra, crater lakes and peat bogs. Soils thick with volcanic ash and seabird guano stay fertile despite the latitude. Most land plants and animals arrived from the Asian mainland by way of Hokkaido and Sakhalin, or from Kamchatka in the north, so species diversity is high but endemism low.
Productive shelf waters where the Oyashio meets Okhotsk gyres feed kelp forests, seabird millions, and historically hunted sea otters. Offshore trawlers chase walleye pollock, Pacific cod and flatfish, and in the 1980s migrating Japanese sardine teemed in summer. Fulmars, tufted puffins, murres, kittiwakes, auklets and cormorants pack the smaller predator-free islets, while seals and sea lions long gave indigenous islanders food, skins and bone.
Edo-period Matsumae claims, American whalers, forced Ainu assimilation, and Yamamoto’s 1941 Hitokappu Bay staging for Pearl Harbor all used these stepping stones. Iturup, Kunashir, Shikotan and the Habomai islets remain the subject of an unresolved dispute between Moscow and Tokyo.
Source: Kuril Islands
