(FILES) This photograph taken on June 8, 2023, shows the Belenos waste recovery boat sailing down the river Seine in Levallois-Perret, northwest Paris. The Belenos, is a boat has been removing floating waste, including plastics, trunks, bottles, scooters and once or twice a year even human corpses, from the river Seine for forty years on behalf of the Hauts de Seine department as well tackling the growing threat of algae with the proliferation of global warming. (Photo by AFP)