Blastomussa wellsi is one of my FAVORITE corals! I used to have some very beautiful ones, but they cooked when my tank boiled :(. Now I have a small piece of merletti (just 3 heads). I don't like them as much, but they have great colors. They grow soooooo slowly! I've had it for about 4 months now... It had 3 heads when I bought it and still has the same old 3 heads.
That second pic almost looks like a bunch of little scolymias...
That first pic looks like it could be some sort of sponge.