JERICO-RI: Joint European Research Infrastructure for Coastal Observatories – a system of systems that strengthens the European network of coastal observatories by providing a powerful and structured European Research Infrastructure (RI) dedicated to observing and monitoring complex coastal marine areas and to the development and implementation of a European Research Infrastructure for Coastal Observatories: (i) provide services for the delivery of high quality environmental data, (ii) access to solutions and facilities as services for researchers and users, (iii) prototype products for EU marine core services and users, (iv) support excellence in marine coastal research to better respond to societal and policy needs. JERICO-S3 will provide a state-of-the-art, fit-for-purpose and visionary observational RI; expertise and high-quality data on European coastal marine areas and continental shelves, giving a unique and unique experience of the European coastal marine environment.The European Commission has been supporting world-class research, high-impact innovation and a window of European excellence around the world. It will significantly improve the current value and relevance of JERICO-RI, through the implementation of the science and innovation strategy developed as part of the JERICO-NEXT project. JERICO- S3 aims at a more integrative approach to science for better observation of the coastal ecosystem, increasing scientific excellence, considering regional and local ecosystems; the preliminary development of an electronic infrastructure to support scientists and users by providing access to dedicated services; advancing the design of the RI and its strategy for sustainability. Significant user-driven improvements will be made in terms of observing the complexity of coastal seas and continuous observation of biology, access to facilities, data and services, best practices and performance indicators, innovative monitoring strategies, cooperation with other European RIs (EuroARGO, EMSO, AQUACOSM, DANUBIUS, ICOS, EMBRC, LIFEWATCH) and international scientific communities, industry and other stakeholders, and aligning the strategy with COPERNICUS/CMEMS, EMODNET and GEO/GEO. GEOSS.