Feather duster or Aiptasia? Or something else?

[TheOneWhoIsThere]

It opens up sometimes and it looks like a feather duster when it opens. I don’t know if Aiptasia does that because I have not done much research on Aiptasia. When I get close to the tank it goes in. I was able to get a picture of it closed from close but open from far. It opens when I am not near it.

 

[TheOneWhoIsThere]

I just added the coral to the tank about 5 minutes ago, it is a zoanthid about 1.5 inch tall for relation to the hitchhiker.

 

[Crabs McJones]

Thinking feather duster. Aptasia dont have a hard stalk on them

 

[TheOneWhoIsThere]

Thanks!