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Mississippi National River and Recreation Area
Strange Floater
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(Strophitus undulatus) Say, 1817
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K.S. Cummings, Illinois Natural History Survey |
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Squawfoot; Sloughfoot; Creeper.
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Small to medium-sized streams and occasionally large rivers in mud, sand, or gravel.
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Up to 4 inches (10.2 cm).
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Green, dark brown, or black, sometimes with green rays.
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Salmon pink, orange or cream colored, with bluish white edges.
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Thin in young mussels. Slightly thick in older mussels.
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Slightly longer than wide. The beak forms an obvious swelling that curves over the point where the two shell halves join. The end of the shell farthest from the beak comes to a slightly rounded point. The end of the shell nearest the beak is rounded. The longest shell edge opposite the beak may be straight or curve in slightly.
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Brown shell, sometimes with green rays. Elongate-suboval. Inflated, beaks prominent. Sculpture includes several well defined concentric ridges.
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Fathead Minnow, Green Sunfish, Bluegill, Largemouth Bass, Yellow Perch, Black Bullhead, Longnose Dace
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![Itasca, Headwaters of the Mississippi River Itasca, Headwaters of the Mississippi River](https://webarchive.library.unt.edu/eot2008/20090511162030im_/http://www.nps.gov/mwr/customcf/apps/CMS_HandF/Pictures/MISS_itasca.jpg) |
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Did You Know?
At Lake Itasca, the river is so shallow, children can walk across the Mississippi. Between Governor Nicholls Wharf and Algiers Point in New Orleans, the Mississippi is more than 200 feet deep.
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Last Updated: September 20, 2006 at 14:42 EST |