What is this on the back of my turbo?

[gallin]

I bought a turbo snail yesterday. This morning I noticed a red looking thing on its back. If the light changes it seems to go backing into a hole o n the snail. Any ideas as to what this could be?

Also the turbo got a bit sandy......

 

[Downbeach]

Barnacle?

 

[Lionfish Lair]

It's probably a feather duster.

 

[RedoubtReef]

small feather duster worm

 

[gallin]

Thanks for your help!

 

[gooicide]

My bigger turbo also has one that looks exactly like that.