Held on 2 July 2025, this workshop on Essential Ocean Variables (EOVs) projects brought together the ObsSea4Clim and BioEcoOcean sister projects, funded under the Horizon Europe programme, to foster synergies across ocean observing disciplines and discuss the project outcomes with the GOOS initiative on ocean indicators. By uniting expertise from these projects, the workshop aims to drive progress toward a more comprehensive, cost-effective, and coordinated approach to ocean monitoring and sustainable management. The results of the workshop are reported in Milestone MS8. Other resources available related to this workshop: Olsen, S. (2025, July 2). Ocean Observations and Indicators for Climate and Assessments: Introduction. Zenodo. https://doi.org/10.5281/zenodo.16597903 Olsen, S. (2024, March 13). Introduction to ObsSea4Clim. Zenodo. https://doi.org/10.5281/zenodo.10887203 Onida, A., & Speich, S. (2025, July 28). Questionnaire about Requirements. Zenodo. https://doi.org/10.5281/zenodo.16537054 Pearlman, J., & Simpson, P. (2025). Preliminary Design of a Federated Network for Methodologies in Ocean Observing (MS17). Zenodo. https://doi.org/10.5281/zenodo.14946530 Pearlman, J., & Simpson, P. (2025, July 28). Ocean Practices Federated Network (OPFN). Zenodo. https://doi.org/10.5281/zenodo.16537137 von Schuckmann, K. (2025, July 28). ObsSea4Clim WP3: EOV-based ocean indicators for climate / Update on the work done so far. Zenodo. https://doi.org/10.5281/zenodo.16536592