![](http://www.alamy.com/thumbs/6/68287E72-901E-4BA6-A3A7-5409EEBCFD23/G0N99W.jpg)
Flatworms (Polycelis sp.) crossing over each other on the bottom of a pond
Size: 4608px × 3456px
Location: Oxfordshire, UK
Photo credit: © Helen White / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., flat, flatworm, flatworms, nigra, platyhelminthes, polycelis, pond, rhabditophora, sp., tenuis, turbellaria, underwater, worm, worms, zoology