Tsugaru Strait, Japan
The Japanese islands of Honshu (below) and Hokkaido (above) are separated by the Tsugaru Strait. The strait connects the Sea of Japan with the Pacific Ocean.
The Seikan Tunnel passes under it at its narrowest point (19.5 km) between Tappi Misaki on the Tsugaru Peninsula in in Honshu and Shirakami Misaki on the Matsumae Peninsula in Hokkaido.
Both islands are dusted by snow, though some green is visible on the lower-laying Tsugaru Peninsula of Honshu.
The Tsugaru Strait has eastern and western necks, both approximately 20 km across with maximum depths of 200 and 140 m respectively.
Japan applies the 3-nautical-mile (5.6 km) territorial limit to the Tsugaru Strait and allows foreign ships to pass through the Strait.