The Sōya Strait is a narrow body of water located between the northern tip of Hokkaido, Japan, and Sakhalin, Russia. It connects the Sea of Japan to the Sea of Okhotsk and serves as an important maritime route for shipping and fishing activities in the region. The strait is approximately 43 kilometers long and varies in width, with its narrowest point being around 8 kilometers. It is known for its strong currents and rich marine biodiversity, making it a significant area for both ecological studies and economic activities, such as commercial fishing.