• Mississippi National River and Recreation Area

    Mississippi

    National River & Recreation Area Minnesota

Outside of a Mussel Shell

The outside of a mussel shell.
The outside of a pocketbook mussel (Lampsilis cardium).

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Did You Know?

A slow and shallow section of Itaska.

At the headwaters of the Mississippi, the average surface speed of the water is 1.2 miles per hour.  People typically walk 3 miles per hour.