Looking for id help

[Mmills1127]

Thought this was a feather duster but not sure. Just wanted to get an id.

 

[2quills]

Aiptasia anemone (pest).

 

[silverado61]

Thought this was a feather duster but not sure. Just wanted to get an id.

If it's just on the one rock, take the rock out. And don't touch it. It can deliver a painful sting. Then squirt it with boiling water. That'll destroy it.

 

[jay0705]

Yup agreed with above