Strait of Tartary or Gulf of Tartary (Russian: Татарский пролив; Chinese: 韃靼海峽; pinyin: Dádá hǎixiá; Japanese: 間宮海峡, romanized: Mamiya kaikyō, lit. 'Mamiya Strait'; Korean: 타타르 해협) is a strait in the Pacific Ocean dividing the Russian island of Sakhalin from mainland Asia (South-East Russia), connecting the Sea of Okhotsk (Nevelskoy Strait) on the north with the Sea of Japan on the south. It is 632 km (393 mi) long, 7–23 km (4.3–14.3 mi) wide, and only 4 m (13 ft) deep at its shallowest point.[1]