Help ID’ing

[Snivley]

Hi guys.
New here as a poster. I am trying to figure out just what I have here. I was initially thinking aiptasia but then they looked kind of like a rock flower offspring picture I saw online. These are in a 13.5 Fluval Evo tank. I appreciate any insight.

 

[Snivley]

Should mention there has been nothing added to this tank in the last month.

 

[cloak]

Briarium perhaps? (star polyps)

 

[ISpeakForTheSeas]

Yeah, those are some kind of octocoral - an encrusting gorgonian species like star polyps is a good guess.