The work was realized through the integration of data and information collected during several projects. The available data consist of morpho-bathymetric data (multibeam) associated with morphoacoustic (backscatter) data, collected in the depth range -25 to -700 m. Extensive coverage of high-resolution seismic profiles (Chirp 3.5 kHz) were acquired along the continental shelf. Surface sediment samples (Van Veen grab and box corer) and vibrocores were collected. These data allowed the mapping of the submerged sand deposits with the determination of their thickness and volumes, and their sedimentological characteristics.