Sometimes the smallest animals help us in the largest way! Freshwater mussels, known as the “livers of the river” are critically important to healthy freshwater systems. They act as natural water filters, removing harmful bacteria and stabilizing sediment — but they are also one of the most endangered animals in the world. Shedd’s global mussel research helps us inform strategies on how we can protect this critically endangered species. #SheddAquarium #WetlandsWeek #DefendtheTen | Shedd Aquarium