Unresolved Small white polyps annoying Zoa

I recently( about 1 week and a half ago) noticed small white polyps on a few of my Frags. I also see them on some of my rock. I don't know what they are or where they came from. I was ignoring them until I noticed that they were all over my sunrise zoa frag and one of the polyps didn't open today. Seems it may be disturbed by them. Pic is from phone. Best I can do for the moment.

Very difficult to see I know. I just recently scraped some off the side of another frag that I saw them on. If they grow back I'll get a better pic.

 

Zoa polyps sometimes don't open then will be fine the next day. A macro shot appears to be in order. Can't tell what they are.

 

I'm going to go out on a limb and say a baby feather duster here. Not positive but that's kind of what it looks like.