This water mite was easier to photograph, because it seemed to have died or run out of air in some way. So it held still for the camera. Even are we accidentally popped it while getting it onto a microscope slide, we still got good photos.
Here it is with a piece of duckweed, looking very tick-like:
Here's a closer view:
Here are two views showing the hairs on the legs of the mite:
I'm not sure what the hairs are for, but they might be used as swimming paddles along with its legs.