Zooanthus?

[SoS]

Here's a question that has been bugging me. I have a few polyp rocks and I can never tell if they are Zooanthus or Palythoa? I know Palythoa have the common connected bases. The Polpys I have are so densly packed It's hard to tell.

 

 

I assume the below is Zooanthus cause they aren't all connected or am I way off.

 

Would the below pic be Palythoa or zooanthus I know its a crap pick but there so densly packed it would be hard to tell with a good pic.

 

These are all around a half an inch tall. While the ones in the above picture are about two inches tall you can use the Flame angel in the background as a referance on the above pic.

 

 

Now I look at this picture and they seem to not have a common mat. These are in my 10 Gal. So there Both Zoo's and jsut vastly differant in size?