What type of coral is this?

[xan]

I bought some live rock a week ago and I got a few of these small polyps and a big pimple mushroom, now these are growing by the day, what are they? Sorry, the pic is kind of fuzzy, I keep shaking when I take the pictures

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They have like small little stems coming off of them like brown tentacles with a green center and like to spread, I see new ones every day! The LFS guy said they were a type of mushroom

 

[viper_930]

They either look like majano anemones or zoanthids to me, but the rate of growth suggests more to majanos. Can you get a clearer pic? And a pic when they're closed?