One Ocean Week Seattle (OOWS) is an international gathering focused on ocean innovation, collaboration and action. Hosted by Maritime Blue, OOWS brings together ocean leaders, innovators, researchers, startups, policymakers, artists, educators and communities to accelerate solutions for a sustainable, inclusive maritime future.

OOWS 2026 marks the second U.S. edition of the globally recognized event and highlights Seattle and the Pacific Northwest’s role as a hub for ocean innovation and sustainability.

The week features summits, cultural and community events, technology pilots and demonstration projects, equity-focused workforce development programming and global delegations. Programming will create opportunities to connect directly with investors and decision-makers, build lasting cross-sector partnerships and move ideas toward implementation through policy, market development and investment.