Hi guys this was found during pond dipping on a bioblitz, this picture was taken through a microscope so sorry for the poor quality.
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I have to say that the first picture looks much more like a flatworm to me. Can you describe the way that it moved? Flatworms tend to glide along compared to the looping or swimming locomotion used by leeches.
Lat/Lng: 50.2171, -5.2994
OS grid ref: SW647404
found in freshwater pond