Is this aptasia?

[Dearth]

About a week ago this tentacled soft coral appeared in this rock not really sure what it is this rock has been in my tank for 4 months and my leather mushroom attached itself to it 3 months ago. I am hoping its not aptasia but I'm prepared for the battle if it is.

http://img.photobucket.com/albums/v447/Dearth01/image-8_zpsffefba2a.jpg

[pinkreef]

Looks like it to me

[jagermaier]

I would have to say yes! Get rid of it now before it multiplies!

[ponokareefer]

I would have to say yes! Get rid of it now before it multiplies!

Agreed. It looks like it is on a smaller rock. Best bet is just to throw the rock out.

[michika]

Yes! 111111111eleventy billion times yes. KILL IT!

Aptasia reminds me of this, all the time.

http://distilleryimage8.s3.amazonaws.com/5f9681ce193f11e2a2ab22000a1fb84b_6.jpg