the aim of prsent study is to evaluate the environmental burdens associated with an intensive land based rearing system of sea bass . Life cycle assessment (LCA) methodology was applied in order to compare two growing facility system :a traditional raceway (TR) and a cascade racway(CR). the main goal was to settle reference levels to assess environmental performances and to identify hot spots and possible improvements. The analysis was carried out following the CML2(2000) impact method using Simapro 7.2 sofware