Ugly little guys

I had a jar in the back yard that I was letting "age" for a few weeks.  I took a peek last night and discovered all kinds of microscopic life and some creatures that were visible to the naked eye.  I fished this one out and came up with the following image.  This is a composite of 48 individual images taken with my Nikon Alphaphot2.  The "worm" was about 4 mm long and I slowed him down by transferring him to ice water on the slide.  The total length of this image is probably 0.25 mm. and (I think) is his head.

Obviously this is another reason why you should never drink water that has not been tested......