What is another word for pearly-shelled mussel?
Pronunciation: [pˈɜːliʃˈɛld mˈʌsə͡l] (IPA) 
The pearly-shelled mussel, also known as the freshwater pearl mussel, is a species of bivalve mollusk that lives in freshwater habitats such as rivers and streams. It is an important indicator of water quality and is listed as an endangered species in many areas. Synonyms for the pearly-shelled mussel include the freshwater pearl mussel, margaritifer clam, and the common pearl mussel. These names describe the smooth, pearly shell of the mussel, which is prized by jewelers for its beauty and durability. Despite their name, pearly-shelled mussels are not related to the edible marine mussels commonly found in seafood dishes.
