Résumé:
Pollution means the introduction by humans, directly or indirectly, of substances or energy into the marine environment (including estuaries). Resulting in deleterious effects to endanger living resources, marine activities such as fishing, water quality and other related activities. This study is divided into three chapters, the first includes the presentation of the wilaya of Mostaganem and the study areas, the second includes material and method, and the last expresses the results and discussion. we finish our work by a general conclusion where we found that during the month of April the pH of the sea water of the the site is in norm on the other hand the temperature, the concentration of the dissolved oxygen, the concentration of the chlorides , the nitrate contents and the values of the suspended matter are lower than the norm
