ID Please.. Is it a mushroom??

[xvinnyax74]

After a few months I have not put anything new in the tank.. And then this shows up.. At first it looked like a polyp. Then it got bigger and has octopus like arms and long tentacles. It eats very well and grows rapidly. I have not started paying much attention to it till now. I at first thought it might be a walking dendro.. but I dont think so now. I have never seen a mushroom that looked like this. I have enclosed photos of different angles..
Oh and now it is about the size of a quarter, but with feeding I see that it rapidly grows.

Anyone???

It held up side down

Top view

Long tentacles vsible..

Side View

Thanks in advance...

Vinny

 

[MissNano]

I am not sure what it is, but im new to the saltwater. On a side note it is pretty whatever it is!

 

[Damsels R Cool]

looks some what like a plate

 

[Azurel]

Pics not comming up for me.....

 

[xvinnyax74]

Pics are in my public album if they are not showing up.
They should be showing up though...
I have tried another forum and I had no one ID it there
I was hoping for some luck here.

 

[JokerGirl]

Fungia. LPS.

 

[Sanagy]

It does look like a LPS.

Wave you hand over it to try and make the it retract, you should be able to see a coral skeleton

 

[ParanoidObseshn]

Cool, yeah it looks like a small plate coral

 

[xvinnyax74]

Very cool. Thanks... It does retract with no light and closes up.
Thanks for the responces
I searched and never found one that looked like this.
It is a cool freebie that popped up out of nowhere.
Thanks again for all your responces, I am going to do some
reading about that coral now...