Help Identify--tunicate?

[JonnyIce]

Hello!

I have been seeing this long stringy fiber whenever I feed the tank and thought it was something from one of my polyps or softies...then I took a closer look and it seems to be something else...hope someone can help from pics thanks!

 

[lfsmarineguy]

Looks like a Vermetid snail. They secrete a mucus net that captures food then they pull it back in and eat it.