The MareGraph project, ‘Towards an Interoperable Marine Knowledge Graph’, obtained funding under the Digital Europe topic ‘OPEN-AI – Public Sector Open Data for AI and Open Data Platform’. The project will increase the semantic, technical, and legal interoperability of three selected high-valued datasets (HVDs) all maintained by the Flanders Marine Institute (VLIZ), which is one of the four partners of the project. This will allow the onboarding of essential marine datasets in the Common European Data Spaces. As such MareGraph will provide a structural component in the digital transition of the marine landscape. The numerous impacts of the project will benefit our seas globally in old and new ways to come.