Tonoma Cape

Off the western coast of northern Honshū, the Sea of Japan approaches the entrance to the Tsugaru Strait. Warm water travelling north from the Tsushima Strait turns east through this passage towards the Pacific. Headlands and small inlets mark the coast, where seafarers must reckon with changing winds and currents. The strait separates Honshū from Ezo and opens a route between two very different seas.