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We determined levels of mercury, cadmium, lead and selenium in muscle and liver of 29 specimens of a large pelagic fish rarely investigated, the Mediterranean spearfish Tetrapturus belone (Raf., 181. The following element concentration ranking (mean ± S.D.; espressed in mg/kg dry weight) was recorded in muscle Hg (3.401 ± 1.908) Se (1.727 ± 0.232) Pb (0.532 ± 0.322) Cd (0.019 ± 0.015), and Se (6.577 ± 1.789) Cd (5.815 ± 3.038) Hg (2.698 ± 2.214) Pb (0.661 ± 1.334) in liver. Levels of Hg, Se and Cd were