Terrestrial snails of all kinds prefer to dwell in moist, shaded areas, but can be protected from dry weather with a coiled shell of calcium carbonate-based material (NBII, 2011).  They can be found in a variety of habitats, including forests, woody and leafy debris, the base of water sources, and within rock overhangs and caves (NBII, 2011). Some differences have been observed in habitat preferences;  Zonitoides nitidus can be found happily living in marsh and wetland areas, while Z. aboreus prefers a drier habitat, such as a garden or forest (Nordseick, 2011).  Zonitoides limatulus is especially fond of moist, muddy areas, such as floodplains near the banks of streams and rivers (Dourson, 2010).  Z. limatulus has been found in Wisconsin in locations near the Mississippi river, as shown in the map below.

        Photo is courtesy of the Wisconsin Department of Natural Resources.  Photo courtesy of http://www.geograph.org.uk/photo/1799291                                  

Zonitoides limatulus is found mainly in the central U.S., and has been located in the states of of Iowa, Illinois, Indiana, Kentucky, Maine, Michigan, Montana, Ohio, and Wisconsin (Wisconsin DNR, 2011).

How are snails like Z. limatulus able to live happily on land?  ...Adaptation!