間宮海峡
The Nevelskoy Strait is a "strait within a strait" in the Strait of Tartary, which connects the Sea of Japan and the Sea of Okhotsk between the island of Sakhalin and the Asian mainland in Northeast Asia. The Nevelskoy Strait connects the southern main body of the Strait of Tartary with the northern Amur Liman, the estuary of the Amur River. The Nevelskoy Strait is formed by the narrowest point between Sakhalian and the Asian mainland, and features a number of small capes and bays. Cape Lazarev, the largest cape, forms the narrow-most section of the Nevelskoy Strait as it projects towards Cape Pogibi.