This survey is part of the OECD project Cities and Regions for a Blue Economy, which advocates for a localised approach to the blue economy. It aims to build knowledge on the scope and the state of play of the blue economy in cities and regions, including the main drivers, challenges, threats and impacts of the blue economy at local level, and formal blue economy strategies and initiatives across levels of government; to identify the governance landscape of the resilient, inclusive, sustainable and circular (RISC-proof) blue economy across levels of government; and to inventory future priorities for the RISC-proof approach to the blue economy in cities and regions.