![](http://www.alamy.com/thumbs/6/FB977AE6-149D-4376-A84C-03D7D9BA9BDB/A25HRM.jpg)
Zebra mussel (Dreissena polymorpha), colonizing on an Unio pictorum, Germany, Bavaria, Chiemsee
Size: 5315px × 3464px
Photo credit: © blickwinkel/Hartl / Alamy / Afripics
License: Licensed
Model Released: No
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