Ditto. I cut a small piece of PVC pipe (about 2 -3 inches) and drilled holes (smaller than the size of the shroom) in it for water flow and filled it with rubble. I then put the mushroom on top of the rubble. I think cut a piece of bridal veil and put it over the top of the PVC with a rubber band on it. As E.D. says, a week or two they usually attached to a piece of rubble and then you can put it anywhere you want. Again, do not leave a lose piece on the sand. Based on experience, they disappear never to be seen again if you don't grab them when you see them........good luck.