what's is this?

[pedrovigario]

Hi everybody...

We recently bought a new coral (Clavularia spp.) and, while we were looking at it closely, we saw the strangest thing inside... It has a rounded appearance, while closed, and when it starts to open, it shows some orange tentacles and a mouth (as if it was an anemone)...
Please take a look at the photos, although they are not great...

Photo 1

Photo 2

Photo 3

 

[Saltlick]

I think it a kind of Zoanthid. A nice freebie, unless you don't like it there. But the more I look at it,
the less it looks like a zoanthid. In that last pic it looks like some kind of nudibranch. That one is
going to require a more focused image
.