I have these small polyps on a rock with some mushrooms. They are starting to take over the rock and I'm concerned that I should be doing something. I'm confident that it isn't Aptaisia, as I've had that previously, additionally these polyps don't get any larger. They are shown at about their max size, which is about 1/2" in height. I couldn't add the image directly or indirectly, as it is too large, and I want to give as much fidelity as I can to those who might be able to identify this item for me. Here is the link. Thanks. p.s. Here's an album of some other macro photos I took this afternoon.