Mussels (Mytilus galloprovincialis) from the Turkish Straits Systems were analyzed for sixteen parent polycyclic aromatic hydrocarbon (PAH) contents by high performance liquid chromatography (HPLC). This marine organism was selected because of its multitude, wide distribution, being bio indicator for the pollution and consumption by humans. Total PAH concentrations ranged from 1.2 to 589 mu g g(-1) in Istanbul Strait, 0.94-36.4 mu g g(-1) in Marmara Sea and 0.4-47.9 mu g g(-1), in Canakkale Strait during the samplings. According to the results Istanbul and canakkale Straits are more polluted than the Marmara Sea. (C) 2014 Elsevier Ltd. All rights reserved.