If you've ever struggled to remove a splinter and watched over time as your skin pushed it out on its own, you know that the human body is good at keeping out foreign invaders. The oyster's body is, too.
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How and Why Do Oysters Make Pearls?
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Key Facts In This Video
Oysters make pearls as a defensive response to foreign objects. 00:11
The mantle begins to deposit a substance called nacre, or mother of pearl, onto it. This is the same substance that makes up the inner shell, and any damage to the shell that reaches the mantle will also show the same response. 00:30
Pearl farmers usually use balls of ground, polished mussel shell to start the pearl making process. Using a similar substance to the pearl itself will prevent it from shattering when a hole is drilled into it. 02:27
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