Katsuura Tuna Market

Auction timing: The auction begins around 7:00am and lasts 20-30 minutes. Arrive at the observation deck by 6:45am to secure a front-row view (the deck has limited space, first-come seating). The auctioneers speak rapid Japanese with hand signals — incomprehensible to outsiders but the energy is palpable. Tuna are arranged in rows, tagged with origin, weight, and grade. Buyers (mostly local sushi shop owners and distributors) inspect the fish by checking the tail cross-section (cut to reveal flesh quality) and tapping the body to assess firmness. High-grade bluefin tuna can sell for ¥10,000+ per kilogram; lower-grade bigeye tuna for ¥2,000-4,000/kg.

Nigiwai Market strategy: After the auction, walk 2 minutes to Nigiwai Market. Arrive at opening (8:30am) for first pick of the morning's landed tuna (sold within hours of auction). Order maguro donburi at one of 3-4 stalls — prices reflect tuna grade: akami (赤身, lean red meat, ¥1,500), chutoro (中トロ, medium fatty belly, ¥2,000-2,500), or otoro (大トロ, fatty belly, ¥3,000+). The otoro is extraordinarily rich, almost melting on the tongue — worth the premium if you're a tuna enthusiast. The stalls also sell tuna negitoro (minced tuna belly), seared tuna tataki, and tuna steak for takeaway. Eat standing at the counter or at communal tables (casual atmosphere).

Seasonal variations: Spring-summer tuna is leaner and less prized (but still fresh). The port's atmosphere is most lively on weekdays when the commercial fleet operates at full capacity; weekends see fewer landings but tourist numbers increase. Combine the morning market visit with an afternoon trip to Nachi Falls — together they make a comprehensive Katsuura itinerary. Nearby Katsuura Onsen (hot spring hotels along the coast) offers seafood kaiseki dinners featuring the day's tuna catch (¥15,000-25,000 per night with meals).