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Plastic microbeads suspended in water

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Plastic microbeads can include both perfectly spherical and rough-edged pellets. These samples, shown on a background scale of 1cm, with millimeter gradations, were extracted from a personal care product in 2013. Sherri Mason’s work subsequently led to legislation prohibiting the use of plastic microbeads in cosmetics and personal-care products. 

Map of Great Lakes shows count of plastic particles at sites where samples were taken.

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Distribution of plastic particles by count for 21 samples collected in lakes Superior, Huron and Erie during an expedition aboard the U.S. Brig Niagara in July 2012.