ID help with new organisms growing throughout tank

[NYCMAN]

I just noticed these round dots attaching to rocks around my tank (all heights btw). The are about the size of a pea, have a tan base with neon green center, and bright neon green tentacles. Any idea what they are. If anything, the look like mushrooms, but are not like any of the ones in my tank, and are growing throughout tank, not localized.

 

[Arkardios]

Perhaps a ball anemone.

 

[Doctorgori]

someone I’d these before… @ISpeakForTheSeas
Summoning, summoning ….summoning

 

[Gumbies R Us]

I just noticed these round dots attaching to rocks around my tank (all heights btw). The are about the size of a pea, have a tan base with neon green center, and bright neon green tentacles. Any idea what they are. If anything, the look like mushrooms, but are not like any of the ones in my tank, and are growing throughout tank, not localized.

Do you have a photo under white lights?

 

[ISpeakForTheSeas]

White light pics would go a long way here, but maybe a corallimorph/ball anemone of some sort?

For a bunch of pics to look through/compare with:
https://reefs.com/identification-guide-corallimorphs-reef-aquarium/