need an ID

[kimba]

Sorry the picture is bad. There is a tube and I thought it was getting longer, thought it might be a feather duster, but it's not. Shells kinda collect in front of it and today I saw 2 antennas.

Any ideas?

 

[Lionfish Lair]

Do a search for Chaetopterid

 

[kimba]

Yup, that looks like it, thanks. It seems to have mix reviews. Some say it's not bad and don't worry, some say it will irritate coral and to get it out.

 

[Lionfish Lair]

These don't do much of anything.