Drift through the legendary strait where the Pacific meets the Sea of Japan, flanked by Honshu and Hokkaido's volcanic peaks. Spot white-tailed sea eagles soaring over the churning channel — a true bucket-list passage through Japan's wildest maritime frontier.
What to expect
Stand on deck as the strait narrows to its 19km bottleneck, volcanic ridgelines rising on both shores. A dedicated wildlife guide identifies white-tailed sea eagles and Steller's sea lions on the rocky outcrops. Hot matcha and seasonal wagashi are served as you take in the panorama. The guide shares the legend and engineering marvel of the Seikan Tunnel running beneath your feet.
Good to know
This is a scenic sailing day — no port call. Book a private guided deck experience in advance through your concierge. Dress in warm, windproof layers; the Strait is notoriously brisk even in summer. Best wildlife sightings are early morning.