restoring contaminated sites, and preventing further pollution. The natural biological processes can be explored to remediate nutrient-rich water by converting nutrients into forms that can be more easily removed (Rönnberg et al., 1992; Troell et al., 1997; Zhou et al., 2006; Rodrigueza and Montaño, 2007). In this study, Sargassum hemiphyllum (Turn.) C. Ag. and Sargassum henslowianum (Turn.) C. Ag., were investigated for their potential to uptake inorganic nutrients and heavy metals