Fig. 5: Eutrophication in the Baltic Sea.
From: Realising the circular phosphorus economy delivers for sustainable development goals

Satellite image showing eutrophication caused by nutrient-rich run-off from neighbouring countries Estonia and Latvia in the Gulf of Riga, Baltic Sea (image credit: European Union - contains modified Copernicus Sentinel data [2020]. The image is reproduced with permission from Valters Žeižis).