Fix the URL and it works, he didn't use the IMG tag correctly.
However I have no idea what you are referring to in this photo.
The small rust colored coralite on the left side just to the immediate right of the green polyp? Or the pinker round disc to the immediate right of that???
The coralite is most likely a Phyllangia species which is usually white or brown and is a relatively hardy filter feeder common on Caribbean LR. The other looks like a nice lil red shroom.