A total of 8,744 and 2,265 cephalopods were caught in 156 trawling stations during Maurit-0811' and ‘Maurit-0911' research cruises, carried out on board R/V Vizconde de Eza during November-December 2008 and 2009. In both cases, the studied area comprises deep shelf and continental margin of Mauritanian, from Cap Blanc to Senegal River, between 80 to 2000 meters depth.