This Pan-European directory lists the organisation profiles of all (900+) Data Holding Centres, Research Institutes, Monitoring Agencies and Sea-Search Collating Centres, that are registered in one or more of the Sea-Search directories (EDMED - data sets, EDMERP - research projects, EDIOS - observing stations/ systems, and CDI - data). Direct crosslinks are provided to their entries in these directories. These organisation entries are maintained online per country by the Sea-Search Collating Centre.