Something red on the Xenia's base

[dexterie]

These are the best pics I managed to take. There's something living inside the base of the Xenia.
It's red/orange and hides when I shed light there or something in the tank gets close. There's a hole and it comes out, with little tentacles.

What can it be? I dipped the coral...

Thank you!

 

[dexterie]

Took another photo...

 

[KJ]

Feather duster.

 

[dexterie]

Thanks. I was already picturing my morning tomorrow, taking the Xenia out and trying to get the thing out. Lol