The Joint Programming Initiative Healthy and Productive Seas and Oceans (JPI Oceans) was established in 2011 as an intergovernmental platform, open to all EU Member States and Associated Countries who invest in marine and maritime research. By joining forces, JPI Oceans focuses on long-term collaboration between EU Member States, Associated Countries and international partners. The platform provides its member countries with a shared voice, strategic agenda and action plan to address complex ocean-related societal challenges that cannot be solved at national level. JPI Oceans adds to the value of national research and innovation investments by aligning national priorities and implementing joint actions. This is achieved by: (1) planning and launching joint calls for transnational research and innovation projects; (2) sharing research infrastructures and resources; (3) enhancing science-policy cooperation with stakeholder involvement to translate science into policy; (4) initiating new forms of collaboration between projects and scientists; (5) strategic community building, disseminating and communicating research results to support their exploitation and facilitating mutual learning. In supporting research and innovation JPI Oceans is helping to ensure society has better knowledge of the seas and oceans, and the potential for sustainable blue growth and jobs whilst also addressing the challenges of climate change and human impact on the ocean.