The substrate of the shelf of the Bay of Biscay and the Iberian Coast ecoregion is dominated sand and muddy-sand areas, with a large mud area in the Gulf of Cadiz.
Pelagic habitats are dominated by the mixture of Mediterranean waters in the south and the influence of Atlantic waters in Portuguese, northern Spanish, and French waters. River run-off, particularly along the French coast, also influences the pelagic habitat.
Threatened and declining habitats in the Bay of Biscay and Iberian Coast ecoregion according to OSPAR:
Other states in the Bay of Biscay and Iberian coast ecoregion
Major substrates on the shelf of the Bay of Biscay and Iberian coast (as compiled by EMODNET seabed habitats; www.emodnet-seabedhabitats.eu). Click to enlarge image.