Greenpeace, led by plastics campaigner Jan Freidinger, takes samples of water from Vltava and Elbe rivers in Prague, Usti nad Labem and Hrensko, Czech Republic, to be analysed for the presence of microplastic particles and microfibres by the Greenpeace Science Unit. Water sampling is part of the 'Rivers of Fish, not Plastics' campaign in the Czech Republic.