The problem of plastic pellets in marine environments has been reported since the 1970s and the first recommendations for legislation were introduced in the USA back in the 1990s. However, in Sweden, these spills have only received attention in recent years.
Small plastic pellets are used as raw materials. The pellets are shipped from the manufacturing site to different plants where they are used in production of various types of plastic goods.
Read more at University of Gothenburg
Image: Build-up of pellets at the mouth of the Stenungeån River leading out to the Askerö fjord. (Credit: Martin Hassellöv)