The purpose of the Demersal Resources Survey Laboratory is to evaluate demersal stocks using scientific surveys at sea (direct stock assessment). The scientific team conducts bottom-trawling surveys all along the Moroccan coast targeting in particular stocks of cephalopods, shrimp, hake and main sparidae. Through these surveys, statistical and geostatistical analyzes are used to produce abundance and biomass indices of target species, mapping their spatial distribution, biological indicators and inventories of benthic biodiversity.