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Pantaenius FBW Comprehensive 728x90

A dissected blue mussel (Mytilus edulis), showing the gills adhering to the inside of the shell.

© NOAA Fisheries
A dissected blue mussel (Mytilus edulis), showing the gills adhering to the inside of the shell. photo copyright NOAA Fisheries taken at
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Marina Exchange FOOTER 138 South - Merry Fisher 795 Series - FOOTER