Freshwater pearl mussel Reference Libraries
The Freshwater Pearl Mussel (Margaritifera margaritifera), is an endangered species of freshwater mussel. They are used in the production of freshwater pearls. There are three subspecies. Margaritifera margaritifera margaritifera, Margaritifera margaritifera parvula, and Margaritifera margaritifera durrovensis. M. m. durrovensis is a critically endangered species in Ireland. Photo...
- Sleep; the state or condition of being asleep.
- The state or condition of numbness of a part due to pressure on a nerve: as, the obdormition of a limb.