Polar periwinkle
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A small periwinkle sea snail native to Uycheon III, the polar periwinkle is a pale gray invertebrate which produces biogenic aragonite to form a pearlescent white shell, which gleams with bands of light pink and creamy white to camouflage them in the frigid waters of their freezing natural habitat. They are considered to be a delicacy among the Tukkav.