Freshwater shells appear repeatedly in animal bone assemblages at Late Bronze Age settlements. This is not only the case in the inland, but also in regions fairly close to the Baltic Sea shore. Significant amounts of freshwater mussels are known especially from Polish and Northeastern German fortified settlements as well as in the Lithuanian lowlands. Several large shell finds from Late Bronze Age fortified settlements in these regions have been published recently, shedding new light on the use of aquatic resources. The majority of the freshwater mussels found belong to the Unio type, whose occurrence is particularly common in contexts of the Lusatian culture. Apparently, these mussels were intentionally selected for certain purposes. However, new excavations in Lithuania show that these selection processes can be observed over a much larger area than previously assumed. This article aims to present a brief overview of freshwater mussel gathering and consumption, analyzing such behavior in a wider context, with a focus on the consumption of mussels by Late Bronze Age communities in specific regions of Northeastern Europe. The significance of mussels as a resource is placed in a larger spatial context based on analogue finds.