Freshwater pearl mussel Freshwater pearl mussel The freshwater pearl mussel ("Margaritifera margaritifera") is an endangered species of freshwater mussel, an aquatic bivalve mollusc in the family Margaritiferidae. Although the name "freshwater pearl mussel" is often used for this species, other freshwater mussel species can also create pearls and some can also be used as a source of mother of pearl. In fact, most cultured pearls today come from "Hyriopsis" species in Asia, or "Amblema" species in North America, both members of the related family Unionidae; pearls are also found within species in the genus "Unio". The interior of the shell of "Margaritifera margaritifera"
City of Pearl and Aras, as she struggles to lead a mission whose goal she doesn't yet consciously know. "City of Pearl" is the name humans have given to a Wess'har city located on planet Wess'ej. Josh Garrod's predecessor, Benjamin, who was taken to see the city by Aras, was said to have wept at its beauty. Many of the people of Constantine relate it to heaven, despite Aras' insistence that the City of Pearl is "just a city." On Planet Earth, Superintendent Shan Frankland (A hardened, self-sufficient, and brutally honest female cop) is preparing for retirement when she is confronted by politician