Shown here are a few shells among the thousands that clogged the pipes at a water treatment plant in San Patricio County, Texas. By the time I was called in, the plant employees had already taken care of the infestation, and no live clams were found. A short report can be downloaded at: https://www.researchgate.net/publication/255982876_Occurrence_of_the_Asian_Clam_Corbicula_fluminea_in_the_Jim_Naismith_Reservoir_Ingleside_Texas_April_2006._Report_to_the_San_Patricio_Municipal_Water_Treatment_Plant_San_Patricio_Texas_May_2006._19_pp
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