What is this? Clove polyps or some pest?

[Tturner]

Hello, I obtained a zoanthid frag which included a small piece of rock the zoanthid was on. I dipped and quarantined the coral and put it in my my main tank two week later after it looked free and good. Now a week later I notice these are popping there heads out of the rock to get light but sucking all the way into the rock to a not visible point at night. They look like they could be clove polyps but possibly young feather dusters maybe? (The star like polyps to the left of the zoanthid)
Thank you in advance to anyone with knowledge.

 

[blaxsun]

It's really hard to tell what they could be in the image.

 

[Rtaylor]

Most likely clove polyps or anthelia

 

[Tturner]

It's really hard to tell what they could be in the image.

Yeah sorry, my phone camera is only so good. I took many pictures and these were the best. If I move the rock they hide away so I just tried to capture where is. Thank you for responding though.

 

[Tturner]

Most likely clove polyps or anthelia

Thank you I'll look into anthelia, as this is a new term to me. I appreciate you taking the time!