Atlantic Ocean science diplomacy in action: the pole-to-pole All Atlantic Ocean Research Alliance

The ocean provides important ecosystem services to society, but its health is in crisis due to the impacts of human activities. Ocean sustainability requires ambitious levels of scientific evidence to support governance and management of human activities that impact the ocean. However, due to the size, complexity and connectivity of the ocean, monitoring and data collection presupposes high investments, and nations need to cooperate to deliver the ambitious, costly science that is required to inform decisions. Here, we highlight the role that ocean science diplomacy plays in facilitating the science needed to support ocean governance and management from domestic, regional to international scales in the Atlantic region via the All Atlantic Ocean Research Alliance. This Alliance is supported by the Galway Statement (2013), the South–South Framework for Scientific and Technical Cooperation in the South and Tropical Atlantic and the Southern Oceans (2017), and the Belém Statement (2017). We discuss the national and international interests that drove the processes of negotiating these agreements, as well as their challenges to date. We also discuss the potential future of the All Atlantic Alliance, as well as its significance in emerging global initiatives such as the UN Decade of Ocean Science for Sustainable Development (2021–2030).