Aniva Gulf

Aniva Gulf opens from southern Sakhalin toward Hokkaido, between Cape Crillon in the west and Cape Aniva in the east. Its mouth is about sixty-five miles wide and faces the open sea to the south. Winter cold and sea ice confine navigation in the sheltered bay, while strong southerly winds leave even its anchorages exposed. The surrounding Ainu communities lived between the abundance of Sakhalin, the Amur region and the Japanese islands.

Japanese fishermen used the bay without creating a dense shore settlement. Fish gathered in its waters, and the natural anchorage made the gulf an occasional base for boats crossing the strait. Local Ainu adopted Japanese dress and customs, showing long interaction around the Sea of Okhotsk.

During the first Russian circumnavigation, Adam Johann von Krusenstern reported whales so numerous that boats approaching land were endangered. Russia later planted settlements along the coast, but Japanese competition and the difficulty of sustaining remote posts forced most to be abandoned. Aniva remained a maritime frontier where fishing, whaling, indigenous exchange and imperial rivalry met on a cold northern shore. The strait also carried knowledge of ice, weather and landing places between the two islands.