Big Ole Majano?

[Krzydmnd]

I've had this, guy for a while now, he Minds his own business and has gotten quite large, he's a good 3 inches tip to tip. He's on an isolated rock I can easily pull so I've left him alone to watch him grow.

I'm assuming it's a Majano?

 

[mborn]

Looks like an aiptasia, you should remove it.

 

[Brad Waddell Wrath's Reef]

100% aiptasia

 

[esther]

Burn it to the ground! lol

 

[Keithb22]

That is chilling and somewhat impressively massive