These guys have been on this rock for years their so small I really never paid any attention to them they don’t really spread I thought they were little worms.. anyone know what they are ?
Can you describe them a bit? Looks like one has a calcerous tube? They are interesting. Kind of nem looking but polyp looking too. A pic in just white light might help.
Just like you said I thought maybe something like a fan worm but these have a green center like a paly or zoa they don’t seem to be spreading their just centralized in that spot