A side event taking place during the 2019 UN Climate Change Conference in Madrid, Spain, focused on the ocean and climate nexus as a key component for increasing ambition and achieving the objectives of the Paris Agreement on climate change. Participants discussed the Ocean & Climate Platform, which was established at the 21st session of the Conference of the Parties (COP 21) to the UNFCCC as a multi-stakeholder coalition working on the science-policy interface.