yes it goes stale
No
The oyster borer is adapted to bore through the hard shell of oysters using its specialized shell-crushing radula. It secretes an acid to soften the shell and has a muscular foot that helps it bore into the oyster. The oyster borer also has a tube-like body shape that allows it to navigate within the oyster shell.
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An oyster
It is a shell, as in a cockle shell or oyster shell.
oyster shell are used to extract calsium which is used in medicine and health suppliments etc. also shell powder is used in making cement
The possessive form of the noun oyster is oyster's.Example:You're always hoping for a pearl when you open an oyster's shell.
Paua shell or oyster shell (mother of pear)
Pearl
with it's hard shell with it's hard shell
The shell of an oyster is mostly made of calcium carbonate.
A "Pearl Oyster" is a shell that is found on the beach, washed in by the sea, and is worth 1200 bells and are the most expensive shell in the game.