![](http://www.alamy.com/thumbs/6/B6387512-1020-4BD5-85AB-C33F28E25B25/BKG27P.jpg)
Planaria
Planaria (Planaria agilis).
Size: 2550px × 1469px
Photo credit: © Encyclopaedia Britannica / Alamy / Afripics
License: Licensed
Model Released: No
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