The amount of microplastic particles in Indonesian sea salt was determined by extrapolation from those measured in 12 zones (top image). Close up of microplastics found in Indonesian sea salt sample in one of the 12 zones (bottom image). A study called “Global Pattern of Microplastics (MPs) in Commercial Food-Grade Salts" found positive correlations between microplastics in seawater and microplastics in sea salts which people consume everyday. Greenpeace is urging corporations around the world to reduce and eventually phase out single-use plastics.