Is this a worm? Any cleaning crew that gets rid of it?

[Coralcitos]

 

[Codeblack88]

From what I can see it looks like a feather worm which is a filter feeder and completely safe. a better picture would help

 

[Mikedawg]

Aiptasia; many recommendations for managing if you search R2R

 

[Skynyrd Fish]

Aptasia. Kill it. Or super glue over it really well.

 

[1guydude]

Aptasia yes. Fire. Kill it with fire. The pit of a volcano is best.
D

 

[Coralcitos]

From what I can see it looks like a feather worm which is a filter feeder and completely safe. a better picture would help

 

[Jekyl]

Looks like aptasia. Take the rock out and superglue over it. Looks like 2 there

 

[IKD]

Agree looks like aptasia and considered a pest.

 

[KrisReef]

That "feather worm" is irritating that Favia coral.