Leeches (Hirudinea)

A nice find, and classically striped.

Unfortunately we don't have anyone who is an expert on leeches at the moment, so the leeches are just going into the leech (class) box until we do.

Interesting ( and a bit gross ). Thanks @turb

The specimen appears to have annuli, and four dark dorsal stripes, the median pair of which are close and separated by a fine pale line. I am unable to determine details of the number of eyes and so on from the photo. A freshwater leech. Swimming leeches are generally flattened, as you noted.

This leech is actually the same species as Sighting 4422782