ID please, is this a flatworm

[anthonysdad]

The little white stringy things, they are also on my live rocks, and some type of feathery fan thing comes out of the end. They are anywhere from 1/2" to 1 1/2".

 

[anthonysdad]

Or maybe tube worms?

 

[Rutrag]

Looks like tube worms to me.

 

[anthonysdad]

Thanks, that's what I was thinking. They aren't that bad to have around right? Filtering and such?

 

[fishroomlady]

yes, tube worms are good things