The name oyster is used for a number of different groups of mollusks which grow for the most part in marine or brackish water.
Inside a usually highly calcified shell is a soft body.
The gills filter plankton from the water.
Strong adductor muscles are used to hold the shell closed.
Oysters are highly prized as food, both raw and cooked..
For more information about the topic Oyster, read the full article at Wikipedia.org, or see the following related articles:
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