Size Comparison: Human and Swollen river mussel

On this page you compare the exact size of Human with that of Swollen river mussel (also known as Unio tumidus) true to scale.

How big is Swollen river mussel?

Learn the true proportions and dimensions. Here, Swollen river mussel reaches a size of approx. 3.54 in. With our interactive tool you can place Swollen river mussel directly next to Human to get a perfect feel for the actual size.

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