Polyethylene, Microplastic, Exfoliating microbeads, Ocean pollution, Contaminant, Phenanthrenes - chemistry, Cosmetics - analysis, Cosmetics - chemistry, Plastics - chemistry, Water Pollutants, Chemical - chemistry, Seawater - chemistry, Plastics - isolation & purification, Water Pollutants, Chemical - analysis, Polyethylene - chemistry, DDT - chemistry