Tube coming out of mushroom?

[adoyle983]

46 gallon bow front. 20 gallon sump with coralife 75 g skimmer fluval 406 canister all water parameters are good. What is the tube coming out of the mushroom I have never seen it before and have had this coral for about 5 months now. Thanks in advance I'm a newb. Hope I posted this in correct spot.

 

[philosophile]

Looks like a feather duster. Harmless hitchhiker.

 

[adoyle983]

It completely retreated under mushroom last night and didn't come back out untill 6p today?

 

[ChimolaFish]

Yea, sounds like a little bitty feather duster. That's great. I love them

 

[cloak]

Have you ever seen a crown? if not, it might be a Tunicate.