Photo of the day (33): Physa fontinalis

Physa fontinalis is a widespread freshwater snail in Europe. It has a sinistral shell as all Physidae snails. A remarkable anatomical feature are finger-like lobes or tentacle-like lobes, that are extensions of the mantle and they partly cover the shell. I counted 7 lobed on the right front and 3 or 4 lobes near the apical part of the shell on the photographed snail. In comparison with Physa acuta, the Physa fontinalis has thin and translucent shell and a rounded apex.

Physa fontinalis

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