Tatar Strait
a strait between Sakhalin Island and the Asian mainland, in the NW Pacific Ocean, connecting the Sea of Japan and the Sea of Okhotsk. 393 miles (632 km) long, narrowing to 5 miles (7 km) wide.
British Dictionary definitions for tatar strait
Tatar Strait
noun
an arm of the Pacific between the mainland of SE Russia and Sakhalin Island, linking the Sea of Japan with the Sea of Okhotsk. Length: about 560 km (350 miles)
Also called: Gulf of Tatary