Paintbrush Coral? What is this?

[sharper]

Hubby and I were at a LFS today and saw this coral named "Paintbrush Coral" It looked like really long grass for saltwater, maybe really long star polyps or hair algae gone crazy long.
We were amazed by it and the rock sold for $35.
We didn't get it, but we are interested in it, so we went online to find out more about it, and haven't come up with anything.
Has anyone ever heard of it before? Is there a different name for this?
Thanks!

 

[joetbs]

Try looking up shaving brush. Just a plant.

 

[xcreonx]

Here's a shaving brush plant: http://www.liveaquaria.com/product/prod_Display.cfm?pCatId=1478

 

[sharper]

yes, I think that was it. Thanks guys!

 

[MCsaxmaster]

Yes, Penicillus is an algae, not a coral.

 

[enitnelaVeyaF]

and $35 is ... wow. they sell for less than $10 around here. plus they never live, so yeah, good thing you thought before you bought.