Why Do Oysters Make Pearls?

Do oysters make pearls to make them more desirable to humans or is this process little more than a happy accident.

Why Do Oysters Make Pearls?

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How Oysters make Pearls #pearls #nature #oyster #oysterpearl

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How Do Oysters Make Pearls? Quick Questions gives you the low

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ELI5: why do oysters have pearls in them? : r/explainlikeimfive