This document summarizes a presentation about Maredata, a Spanish network focused on open research data management. The network brings together Spanish research teams working on topics like interoperability, access, preservation, and open data policies. It aims to coordinate these groups, avoid duplications in research, and promote transparency. The benefits of open research data discussed include increased collaboration, validation of results, and transparency. Future areas of focus for the network include identifying discipline-specific research data management needs, exploring open health data, and addressing issues like data protection, quality, and ethics.