The substrates within the coastal NwS have been mapped by the MAREANO project. This mapping is confined mostly to the Norwegian continental shelf and slope. The majority of the shelf consists of fine muds and sandy muds, with coarser sediments on the shelf slope (Figure 10). MAREANO has located several vulnerable habitat locations, including coral and sponge communities. There is little information from the deep-water areas.
Figure 10: Major substrates in the Norwegian Sea ecoregion (compiled by EMODNET seabed habitats; www.emodnet-seabedhabitats.eu).