The section has overall responsibility for the integrated management plans for the Norwegian marine environment, the protection of marine biodiversity, and for pollution control and other impacts on the marine environment. It is also responsible for international cooperation on the marine environment and for follow-up of a number of international conventions in the field.

Integrated management of the marine environment. Management plans for the Barents Sea and the sea areas off the Lofoten islands, the Norwegian Sea, and the North Sea and Skagerrak. The petroleum industry, fisheries, shipping, including management of the Norwegian Maritime Directorate on environmental issues. Marine protected areas, marine spatial planning, marine biological diversity, acute pollution, new marine and maritime industries. Knowledge about marine ecosystems. International cooperation, including the OSPAR Convention, IMO, the London Convention, the EU marine strategy and cooperation on protection of the marine environment in the High North. The Oil for Development program.