Since the beginning of 2018, data of beach litter have been gathered and processed in the EMODnet Chemistry Marine Litter Database (MLDB). Abundances have been calculated on each beach and year using the following computation: Platic bags abundance=(total number of plastic bags items (normalized at 100m))/(Number of surveys on the year) Percentiles 50, 75 & 95 have been calculated taking into account data from all years.
Beach Litter - Mean number of Plastic bags related items per 100m & to 1 survey - Official monitoring