What are these?

[JennyG]

They’re tiny. Any idea what they are?

 

[Zarekk]

Crazy. Im dealing with this myself on my polyp coral as well! if my research is correct they are hydriods…

 

[GSPClown94]

The first pic looks like hydroids, also some bubble algae. The second pic looks like a ball anemone, though I’d ask for second opinions on this. In the second pic I also see some vermetid snails and spirorbid worms.

 

[Gumbies R Us]

https://www.reef2reef.com/threads/hydroids-a-reference-to-some-strategies.819522/