A Euglena gracilis Z strain was used as a biomarker to examine the detoxifying effects of desalinated deep seawater (DDSW) and surface seawater (DSSW) on the hazardous chemical, tributyltin chloride (TBTCl). A distinct restoration effect on cell motility was observed after incubating with DDSW. The effect was largely attributed to magnesium, calcium and silicon that are involved in cell motility and morphology.
