I went out and got my first mushroom the other day and as much as I didnt want to have to ask, I have to. I have spent 3 days trying to find this worm id and am stumped. If you would give it a try would very much appreciate it. If you look at the bottom side of the mushroom, you will see 3 or 4 of them. I will get another picture in here as soon as i can resize it with many more. Aslo i see when i look at this picture after downloading it is bubble algae (Ventricaria) Two on this rock but thank goodness they will be easy to remove. I would have to say i have seen as many as 20 worms sticking out of this one little rock. one time as many as 5 out of one hole. Thank you for your time.