The radionuclides (Cs-137, U-238, Th-232 and K-40) and heavy metal concentrations (Cd, Pb, Cu, Zn and Mn) were determined in macro algae, mussel, fish and sediment samples collected from two stations at the eastern Turkish coast of the Black Sea. The measured Cs-137, U-238, Th-232 and K-40 concentrations are within the range of the values cited in previous works concerning the Turkish Black Sea coast. However, the radionuclide concentrations in the sediment fraction < 63 mum are significantly higher. Regarding the influence of the collection sites on the accumulation of the heavy metals in biota, Rize is generally more polluted. At the same time, Pb, Cu, Zn and Mn concentrations in Rize sediment are also higher than in Pazar sediment of similar grain size. In general, the heavy metal concentrations in the present study are not higher than previously results. However, Ph and Cu levels increased in biota and sediment in the Turkish area of the Black Sea during the years investigated.