Marine subdomain EOV product version 2 is available publicly. The overarching goal of ENVRI-FAIR is that all participating research infrastructures (RIs) will improve their FAIRness and become ready for connection of their data repositories and services to the European Open Science Cloud (EOSC). Deliverable D9.1 has reported on the roadmap of the RIs in the marine subdomain towards improving their FAIRness. It presented the approach of using FAIR questionnaires (together with WP5) to identify the strengths and weaknesses of each RI and a first indicative set of activities to improve identified weaknesses or gaps. After formulation in Deliverable D9.2 of implementation plans for mitigating these gaps during the next phase of the ENVRI-FAIR project, the RIs from the marine subdomain have specified in Deliverable D9.3 the technical services and interfaces to be implemented at RI level and have undertaken the implementation. The RI vocabularies and erddap services were presented in Deliverable D9.4 and the operational list of FAIR services presented in Deliverable D9.5. The present Deliverable D9.8 is linked to Task 9.8 going from M24 to M48 and aiming to demonstrate the marine subdomain FAIRness. A first version of the ENVRI-FAIR Marine semantic Essential Ocean Variables (EOV) data broker was already presented in Deliverable D9.7, and this deliverable D9.8 presents the version 2 software, which includes new technologies for performance enhancement. This version 2 is now available on GitHub and preserved on Zenodo: • https://github.com/envri-fair/marine-eov-broker • https://doi.org/10.5281/zenodo.7871643