Little ID help

[craftedpacket]

Just a while ago I found a white worm looking creature in my Chaetomorpha. The end of the worm thing had something sticking out of it that looked like a feather duster. When I moved the cheato to get a better look the feather part sucked back into it...any idea what this is?

[reefshadow]

Most likely a feather duster, harmless and beneficial. I have them all over the tank.

[Scuba Oz]

Some type of tube worm, feather duster ect. A pic would help

[craftedpacket]

Thanks for the replies...I dont have access to a camera at the moment. From what I can find online its most likley a tube worm...these are not bad right?

[frederickk]

They are harmless.