ID Please

[oh207]

Hey MR, I've got this coral in my tank and would like to know whats the name. I picked up from another MR member last year. I don't remember who it was or whats the name.
It was the size of a fingernail when I got it and have since grown to 2-3" in diameter and have since split into 2. I think its a kind of mushroom.

BTW, its a mean coral, it stings the anemone and kenya tree. Nothing can go next to it.

Thanks!

 

[Mongo77]

Looks like a hairy mushroom.

 

[daaznmofo]

Hairy mushroom to me

 

[oh207]

Thanks guys! I've Googled hairy mushroom and it looks like thats indeed what it is. Its good to know. And now that I know, I will be sure to try and keep them under control.