Monbetsu Garinko-go Drill Icebreaker & Okhotsk Undersea Ice Tower

Category: Drift Ice Cruise & Marine Science | Location: Hokkaido

Gazing out over the freezing expanse of the Sea of Okhotsk in northeastern Hokkaido, Monbetsu City stands as the epic pioneer hub for encountering seasonal polar pack ice (Ryuhyo). The port is globally renowned for its iconic crimson sightseeing icebreaker, the Garinko-go III IMERU—a revolutionary maritime vessel armed with twin monumental Archimedean screw drills mounted right on its bow. Unlike conventional icebreakers that crush ice sheets through displacement weight, the Garinko drills, bites, and grinds thick ice slabs to pieces, delivering an electrifying tactile sensation of churning vibration and thundering acoustics felt right from the open forward observation deck. Standing anchored at the tip of an offshore breakwater one kilometer into Monbetsu Bay, the Okhotsk Tower is the world's very first and only undersea observation tower constructed in icy subarctic waters. Guests descend via elevator to an undersea floor 7.5 meters below the waterline, peering through heavy reinforced glass windows to gaze upward at the submerged underbellies of drifting ice floes and discover deep-sea northern marine life. The tower also hosts a permanent exhibition of enchanting 'Sea Angels' (Clione limacina)—ethereal, translucent winged mollusks that flutter gracefully through sub-zero marine tanks. Adjacent to the cruise harbor lies the heartwarming Okhotsk Tokkari Center (Seal Sea Paradise)—Japan's only dedicated rescue, rehabilitation, and research sanctuary exclusively for seals. Here, spotted seals (Goma-azarashi) and ringed seals (Wamon-azarashi) rescued from injury or drift-ice strandings are nurtured back to health. Visitors can attend intimate feeding presentations, interact with charming resident seals at arm's length, and pose beside the colossal 12-meter-tall 'Giant Crab Claw' (Kani no Tsume) monument jutting dramatically into northern skies.