What is this?

[Kupo]

I found this on a frag. Not sure if I need to dip it again or leave it.

 

[WheatToast]

The video isn’t loading. Could you attach some pictures?

 

[Kupo]

I tried taking a picture of it but it's hard to see. It's very tiny. Let me know if you can see it now.

 

[shakacuz]

I tried taking a picture of it but it's hard to see. It's very tiny. Let me know if you can see it now.

does it retract if disturbed/poked/touched?

 

[AydenLincoln]

I’m thinking baby feather duster.

 

[Jedi1199]

Looks like a feather duster. Harmless and helpful.. leave it.

 

[Kupo]

Yes, it retracts. Haven't tried poking it yet. I'll try poking it when it's out.

 

[Kupo]

Looks like a feather duster. Harmless and helpful.. leave it.

Thank you.

 

[WheatToast]

The “half crown” (rather than a circular crown) of feathers leads me to believe it’s actually a barnacle. These are also harmless filter-feeders, which, surprisingly, are crustaceans.