The EUSeaMap3 project (Operation, development and maintenance of the European Seabed Habitats Observation and Data Network – EMODNET Lot 2) aimed at further developing an operational service where marine data on seabed habitats are interoperable and available. The project involved the development of data products, thus providing (free and open) access to the observations on which these data products were built. EUSeaMap3 produced new information on the hydrographic features of European seas, and the collection of individual species and habitat models was carried out by universities and research institutes. Following the implementation, the project had the following results: data on habitats in European seas, products describing the marine environment, such as salinity, wave exposure and optical properties of water, 300,000 habitat inventory stations in European sea areas, over 800 maps describing seabed habitats, over 50 seabed habitat models collected, EOV (Essential Ocean Variables) products – seaweed, macro-algae, corals, interactive maps of seabed habitats and final project products;