Nudibranch?

What is this thing on my zoa? It has been closed for a day or two now. Nudibranch? Flatworm? Should I remove it?

 

I think i see some frills on the left in the first pic and on the bottom on the last pic. Im going to vote zoa eating nudi.

 

I would remove the zoanthid and dip it if able. Get rid of the flatworm versus nudibranch regardless.

 

If it causes the zoa to close get rid of it.

 

Thanks for everyones input! I think I figured it out. It felt like glue when I was removing it. This cannot be the reason it is closed. I fragged it around two weeks ago and it has been open for most of the time:

Poor Sunny D. I hope it makes it, because I accidentally stabbed it with the tweezers. Though, I have actually cut polyps in half and had success so there is some hope. I am not sure what the problem is here. All of the other coral is healthy for the most part, including zoas and other Sunny D polyps (in the same amount of light). It didn't touch another coral either. Levels are acceptable. Hmm.

 

I'd probably close up for a while if I got stabbed by tweezers LOL. Give it some time, I've had them stay closed for more than a day or 2 & open back up.

 

Looks like a flatworm to me.

It's not a traditional zoa-eating nudi, but that doesn't mean it isn't eating it.

 

I've had them stay closed for months and open back up! There is no losing hope. I'm just going to give it some shade and leave things be unless I see more than 2 other corals unhappy.

I would imagine the texture of flatworms to be on the softer side, rather than like cement. I don't know if you saw my previous post

 

Yeah, totally missed that. heh. Sorry.

 

And its back