I have those wormy things in my pool and am disgusted by them. Mine don't seem to be on the top of the water. They seem to be more on the bottom and only towards the top when the pool is stirred up from someone being in there. I noticed them when vacuuming the pool. There were TONS of them in the bag. They are tan in color, almost looks like bleached out grass seed. They look just like that picture that's posted. Most of them were not moving, but at a really close look a few of them were. I shocked the pool yesterday and now it is raining today, so we will see how many are there when I am able to vacuum again. I really would like to know what they are. Who wants to swim in a worm pool?