Please ID this creature

[Lollipop]

got new corals and forgot to dip. In a couple of hours, I see these on glass. They are super tiny 1/4” open. Many legs or tentacles. Clear sort of.

 

[ccoffel81]

I’m clueless but would remove anything I don’t recognize better safe than sorry

 

[reef lover]

Look like baby aptasia..

 

[Katrina71]

Rosemary's Baby

 

[shub]

looks like a aptasia... but don't scrap it off the glass as it will spread.... I recommend aptasia X from Red Sea to kill them....

 

[Lollipop]

my first suspicion was aptasia but they seem to have more tentacles. Sucked them out of tank and each became like 1mm diameter... not an aptasia to me as i know how they look and behave. would starfish like them? i recently learned that starfish can eat inverts...