Hello everyone this has me very intrigued, I have no idea what it is. Maybe someone can shed some light on this. Thank you in advance. It looks like little hair or fingers that raise and lower from the rock. http://youtu.be/F97-qJqkfeM here is another one not very clear, but it is off to the right on top.. http://youtu.be/7H1qkuA1kP4 Disregard this post can't figure out how to delete it, but found out they are barnacles. Well I guess since I have this thread. What do they eat? Is there anything I can feed them?