Yet Another Acro ID

[TimeConsumer]

I love how the polyp tentacles are very faint and tend to pulse out, grab plankton, and flick back in. They almost look like tiny feather dusters.

 

[Frick]

Vermiculata http://sdmas.com/corals/787.php

 

[bmhair03]

Those are barnacles that do the flickering. Quite a few on that piece. They do no harm.