Feather duster parasite in Duncan coral?

[grimreefer911]

I have recently noticed a feather duster like animal living inside the “stalk” of my new Duncan coral. There looks to be a small white hole in the coral where the “feather duster”pokes out. Is this critter harmless and if so how would I go about removing it from the coral? Any input is greatly appreciated, thank you.

 

[MaxTremors]

It’s a harmless filter feeder, it won’t hurt anything (it’s not a vermetid).

 

[Propane]

I’ve had a feather duster growing with my acans since I got. Both are doing well.

 

[ISpeakForTheSeas]

That’s a barnacle - it shouldn’t hurt the coral, but it may impact how it grows a bit.

 

[Rick's Reviews]

Hard to tell from blue photos, I have similar, I think harmless, 'if in doubt throw it out' or let it grow