This subsection treats sectors of the North Atlantic ocean margin from Cape Ortegal in NW Spain around Biscay and the British Isles to the Norwegian shelf as far as 70N (Fig. 5.2.1). The Faroes, Iceland and East Greenland shelves are also included. The North Sea is excluded, being treated elsewhere as a marginal sea (Chapter 7.3). Another subsection treats the sub-polar Northwestern Atlantic which continues to Labrador and the American margin as far as Cape Hatteras (Chapter 5.3)
