It's possible that animals at the bottom of the food chain could be eating them, and scientists say the biggest sources for this type of pollution included packing materials, nylon, paint and a fiber often found in cigarette filters.

有可能食物链底层的动物会吃掉它们，科学家说这种污染的最大来源包括包装材料，尼龙，油漆和纤维经常在香烟过滤器中发现。