OOI-ECS is a network of early career marine scientists working to develop a community of practice around open ocean observatory data. Interested people do not need to work in marine systems to join. The overall vision of the OOI-ECS group is to solidify a team of early career scientists interested in leveraging diverse strengths and expertise to answer challenging scientific questions using ocean observatory data. Anticipated outcomes of this project are: future growth of the network of ECSs, collaborative projects using OOI data, project proposals, presentations, and peer-reviewed publications.