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George Washington Memorial Parkway An osprey flies over the George Washington Memorial Parkway.
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Terrestrial snails of Great Falls Park, Clockwise from top, Succinea sp., Anguispira fergusoni, and Ventridens ligera - Photo by Brent Steury
A total of 43 species of mollusks including 33 snails (6 aquatic and 27 terrestrial {23 shelled and 4 slugs}), 8 freshwater mussels and 2 clams clams have been documented from GWMP.

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