NMDC Sediment broad scale value set NMDC PlantAssociated broad scale value set NMDC Water broad scale value set participates in marine biome A marine ecosystem which is in its climactic successional state. This biome includes open-ocean and unprotected coastal ecosystems, characterized by exposure to wave action, tidal fluctuation, and ocean currents as well as systems that largely resemble these. Water in the marine biome is generally within the salinity range of seawater: 30 to 38 ppt. SPIRE:Marine aquatic biome marine ecosystem climactic ecological succession