It has EYELASHES???

[AtlantiCat]

I am unable to see this clearly with my eyes and a photograph just looks like naked rock with coraline. Is this a squashed feather duster or some sort of bivalve? It's incredibly tiny, smaller than a pencil eraser. I don't see the typical feather duster tube, but that doesn't mean it's not hidden there somewhere.

Ideas?

 

[IKD]

Looks like a duster to me

 

[shakacuz]

feather duster that defied the odds and grew an oval shell/mouth lol