I have a torch coral that has six branches on it tonight i was watching it as i fed it and noticed that one of the branches tentacles was retracted enough to expose the mouth opening of one of the branches all other branches were extended but the one that wasn't from the opening in the end of the branch a white extension was coming out of the opening with about twenty or so tentacles on it and then would retract back into the opening of the branch about every twenty to thirty seconds this was happening my question is does any one know what this is i have only had the torch about a week and it really looks good to me any info would be greatly appreciated