I have had this coral a few months now and I have been trying to get rid of what I think is an apistia on it. But recently noticed these tentacles which look different. Is this another pest anemone or something else?
Possibly a small brittle in the Amphiura genus? They almost never leave their rock crevice or spot in the sand and keep 2 or more legs out waving in the water to catch detritus and microrganisms.