Feather dusters or something else?

[dwag1122]

These are in my refugium. Started out with the white one, then a couple weeks later, the bigger brown one formed. Now I’m finding a new brown one about every week or so. They retract if you get near them and they attach to either rocks or the sand. Started seeing these after I put a few pieces of TBS rubble rock in it.

 

[Maritimer]

Feather dusters. Enjoy them!

~B., who cannot have feather dusters.

 

[kevgib67]

Good filter feeders!

 

[JoJosReef]

Feather duster