Can anyone id this for me?

[blader123]

I thought it was a shroom but it split and my have stung me. It also can move alot faster than a shroom
Anthony
Blader123

 

[teresaq]

mini carpet anemone
https://forums.saltwaterfish.com/t/300827/looking-to-buy-a-mini-carpet-anemone

 

[littlebuck]

agree its a mini carpet

 

[seamandrew]

Yep, me too, it's a carpet anemone!