Feather duster or pest?

[MattPLaw]

Hello all!
During a sand bed cleaning I just bumped my trachyphyllia that I've had for about 2 months. It looks like there is a feather duster worm hitchhiking on the bottom. Is this a feather duster worm and it's harmless? Or is it something else? Should I remove it? If so, how?

Thanks in advance!

 

[steveschuerger]

Yeah, that’s a feather duster. Harmless.

 

[MattPLaw]

Yeah, that’s a feather duster. Harmless.

Is there a good way to separate it without harming either the worm of the coral? And thank you!