Size Comparison: Human and Common periwinkle

On this page you compare the exact size of Human with that of Common periwinkle (also known as Common winkle, Edible winkle, Littorina littorea) true to scale.

How big is Common periwinkle?

Learn the true proportions and dimensions. Here, Common periwinkle reaches a size of approx. 1.10 in. With our interactive tool you can place Common periwinkle directly next to Human to get a perfect feel for the actual size.

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