What coral would this be?

Greetings !
I was given (raffle prize) a dime size piece of this coral a while back and I do not recall what it is.
It seems to grow any place well..these photos show it on the side of some rock work, about middle depth, medium flow.
I also have a piece that was knocked off by the turbos...it seems to be thriving in the sand bed...also one in heavy flow,on rock work,also growing well.
It is strange though, the one in the photos seems to be all snarled up and growing wildly...where as the one with heavy flow is growing flat.
...they extend feeders to about 2 inches....lime green color on brownish body.
Thanx in advance.

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Looks like to psammocora

 

Its Pavona or 'Cats Paw' coral.

 

Yes; a species of pavona. Polyps on psammacora are much smaller.

 

'cactus' pavona. Outside chance it might be a hydnophora but the polyps are leafy enough i think.

 

Here is the piece that is 6 inches from a Koralia 5
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and this is a piece thats just laying down here waiting to be adopted.
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