Seabed sediments and sedimentary environment. The map service presents the grain size composition, relative hardness and the genesis of the of the seabed sediments in Norwegian marine areas. The thickness of Quaternary sediments on the Norwegian Shelf and the thickness of the Holocene sediments in the Skagerrak are also presented.

The map service features land forms on the sea floor. Land forms formed under the influence of ice, pockmarks formed by seepage of gas or liquid from the underlying sediments/bedrock and slide scarps formed by slope failures, which are available from the map service, are interpreted on the basis of detailed bathymetry and sediment data. In addition, the service include depth information with depth contours, shaded relief in gray scale and shaded bathymetry in blue scale (terrain) from the detailed mapped areas in the coastal zone.