This is the best I can do right now can try later to get a better pic with lights on. The ugly stage is getting going here's some more unwanted algeaWhich organism are you asking about? The likely spirobid worms everywhere in the picture or the central organism with pedals/tentacles? If it's the latter, do you have any other photos such as ones taken from a different angle or with only white lights?
they were on separate rocks that I have now taking out and there in a separate tank not sure what I'm going to do here's some pictures of the rocks nowThe good part is that they are only on the rocks that are seperate from the main structure and I will be taking them out and into another aquarium. Now all I have to do is figure out how to get rid of them.