Great pond snail (gliding at the water surface),  <i><a href="//commons.wikimedia.org/wiki/Lymnaea_stagnalis" title="Lymnaea stagnalis">Lymnaea stagnalis</a></i>, Family: Lymnaeidae, Location: Southern Germany, Beiningen
<a href="//commons.wikimedia.org/wiki/User:Holleday" title="User:Holleday">Holger Krisp</a>
CC BY 3.0
<span class="int-own-work" lang="en">Own work</span>