The Data Portal for German Marine Research is a product of the Marine Network for Integrated Data Access (MaNIDA) funded cooperatively by the Helmholtz Association. Our consortium aims to implement a sustainable e-infrastructure for coherent discovery, view, download and dissemination of marine research data. The data portal brings together data from different German Marine Research Institutes in an automated way (machine readable). For the first time a huge amount of marine data sets are commonly made searchable with direct access and without any registration procedure. Currently we are able to provide access to metadata and data from these partner institutes: – AWI – Alfred-Wegener-Institut; – BSH – Bundesamt ü Seeschifffahrt und Hydrographie; – GEOMAR – Helmholtz-Zentrum für Ozeanforschung; – HZG – Helmholtz-Zentrum Geesthacht; – MARUM – Zentrum für Marine Umweltwissenschaften.