Do you know why some Oysters make pearls. When a grain of sand gets stuck in the oysters body, they ease the pain and irritation by coating it with multiple layers of nacre, the mineral that lines the inside of their shells. This causes a pearl to be formed, cultured pearls are made in the same way. The only difference is that instead of accidental circumstances, a pearl farmer embeds a grain of sand in to the oyster. can you please find 11 errors for me?