Clam scuba diving underwater photography MN (5 images)

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Freshwater clam, (Unionidae)family. Freshwater native clam, 270 spieces belong to the Unionidas a total of 72 percent are listed as extinct, endangered, threatened or of special concern. They are long lived, reaching ages greater than 100 years. Clams bury thier head and foot in the mud or sand, and thier rear end is up in the water column. They filter 10 gallons of water per day. Unionids feed on many different items, but bacteria, such as E coli and blue green alge are its favorite food. If...
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