A black canister with yellow filter inside—resembling a cross between a trash can and big pool skimmer—was dunked in the Schuylkill River at Bartram’s Garden park in Philadelphia and emptied daily from May to June to see what it would catch.
Click here for original story, The EPA is dunking giant ‘pool skimmers’ in Philly river to suck out trash—and find plastic waste
Source: Phys.org