The PPR Ocean of solutions aims at addressing ocean-related societal challenges through integrated research. 5 thematic challenges have been identified: anticipation and adaptation to extreme events in oversea territories; prediction of climate-driven changes in polar oceans; protecting ocean biodiversity; sustainable management of marine physical and biological resources; characterization of ocean exposome due to pollutions. 2 transversal challenges will also be addressed: coupling of ocean observation and modelling; increasing ocean literacy. The PPR Ocean of solutions has been announced by the French President in December 2019 as a major contribution of France to the UN Ocean Decade. Although funding is available to French research teams only, this ambitious program also aims at fostering international collaborations on identified challenges.