Petroleum hydrocarbons, PAHs, Pollution, Sediments, Biota, Hydrocarbons, Acyclic - analysis, Environmental Monitoring, Indian Ocean, Food Contamination - analysis, Risk Factors, Biodiversity, Hydrocarbons, Aromatic - analysis, Oman, Middle East, Water Pollutants - analysis, Animals, Geologic Sediments - analysis, Fishes, Muscles - chemistry, Carbon - analysi...