The Geo-Seas partnership comprises 30 organisations, of which 26 are data centres, managing marine geological and geophysical data sets. The other 4 organisations bring in additional expertise from specific user communities and in product development.

The project is coordinated by British Geological Survey (BGS), while the technical coordination is performed by Marine Information Service (MARIS). The following table gives all Geo-Seas partners in alphabetical order. Clicking on each name provides additional information on each organisation from the European Directory of Marine Organisations (EDMO), which is maintained by SeaDataNet.

Name Country 
BRGM / Office of Geological and Mining ResourcesFrance
British Geological Survey, EdinburghUnited Kingdom
British Oceanographic Data CentreUnited Kingdom
Bulgarian National Oceanographic Data Centre(BGODC), Institute of OceanologyBulgaria
Centre de Données Géophysiques (CDG) / CNRS - Université de StrasbourgFrance
Centre for Environment, Fisheries and Aquaculture Science, Lowestoft LaboratoryUnited Kingdom
CIRIAUnited Kingdom
Department of Geology, School of Biological, Earth and Environmental Sciences (University College Cork)Ireland
Faculty of Geography and Earth Sciences, University of Latvia (LU)Latvia
Federal Institute for Geosciences and Natural Resources (BGR), Hannover.Germany
Geological Survey IrelandIreland
Geological Survey of Denmark and Greenland (GEUS)Denmark
Geological Survey of EstoniaEstonia
Geological Survey of Norway (NGU)Norway
German Oceanographic DatacentreGermany
IFREMER / IDM / SISMER - Scientific Information Systems for the SEAFrance
IGME, Geological Survey of SpainSpain
Institute of Geology and Geography of Nature Research CentreLithuania
Institute of Geology and Mineral Exploration, Marine Geology Department (MGD/IGME)Greece
Management Unit of North Sea and Scheldt Estuary Mathematical Models, Belgian Marine Data CentreBelgium
Marine Information ServiceNetherlands
National Laboratory of Energy and GeologyPortugal
National Observatory of Athens, Institute of GeodynamicsGreece
National Oceanography Centre, SouthamptonUnited Kingdom
OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale), Infrastructures DivisionItaly
Polish Geological Institute - National Research Institute, Branch of Marine Geology (PGI BMG)Poland
TNO Geological Survey of the NetherlandsNetherlands
UB/ Barcelona University., Department of Stratigraphy, Paleontology and Marine GeosciencesSpain