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Hello, this is Obreader. Have you ever heard about the ability of oysters to purify muddy water? The nickname of oysters, familiar to us as food, is a living filter. Last time, we showed you how clams purify chlorella and introduced you to the amazing filtering ability of clams and their role in nature. This time, we will talk about oysters, the guardians of the sea. How much do you know about the abilities of oysters? Please check the video~ Thank you.