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The Sea of Okhotsk is a marginal sea of the western Pacific Ocean. It is located between Russia 's Kamchatka Peninsula on the east, the Kuril Islands on the southeast, Japan 's island of Hokkaido on the south, the island of Sakhalin along the west, and a stretch of eastern Siberian coast along the west and north. Its northeast corner is the Shelikhov Gulf. The sea is named for the port of Okhotsk, itself named for the Okhota River.