Not a sun coral...

[Charlena00]

I bought this small piece from my LFS. It was labeled sun coral but all the sun coral I have looked up don't look like this. Dont mind my shrimp, he just started annoying them when I was taking the picture.

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[oneofmany]

They look like some type of zoanthid IMO.

http://www.wetwebmedia.com/ca/volume_1/cav1i1/blane-zoanthids/zoanthids.htm