Pursuant to Resolution EC-55/1, this document provides information on the key outcomes of Ocean Decade implementation across the four main pillars of activity: (i) Decade Actions; (ii) Governance and coordination structures and informal working groups; (iii) Resource mobilization; and (iv) Stakeholder engagement and outreach over the period from July 2023 to May 2025, including the 2024 Ocean Decade Conference. It identifies remaining challenges and opportunities across the pillars and concludes with a vision and outlook for future years of the Decade. An addendum to this document provides more detailed information.