One Ocean Week Seattle 2026

Washington Maritime Blue’s One Ocean Week Seattle returns for its second year, bringing ocean and maritime leaders, startups, investors, researchers, policymakers and community groups together for a week of events across the city. This year’s theme is Ocean Action. The program includes policy workshops, startup showcases and pitch events, blue-economy finance sessions, vessel tours, cleanups and cultural programming. Most events are free, and each registers separately. The flagship One Ocean Week Seattle Summit is Tuesday, Oct. 20, at Bell Harbor International Conference Center. More info and registration