What is this?

I got this mystery creature when I purchased some live rock last year. It's always been a pretty cool thing to have in the tank, doesn't really do much but is colorful.


From what I can tell, it looks a lot like a mushroom or ricordea, but has the texture of an acan without the feeder tentacles. There's a mouth in the middle and it attaches to rock via a foot. It's capable of rapidly contracting and tends to wander around the tank once in a while. It just reappeared after being gone for about two months.


Never been able to figure out quite what it is. Any input would be much appreciated!


Here it is eating a shed hermit crab carapice. It was the best photo I could find, from last year. It's currently too deep in my tank to get a solid photo.





Under actinic

 

Apparently photos aren't wanting to cooperate. I've attached the pics, hopefully they show up.

 

Holy moly, that's it. THANK YOU! I've spent hours trying to find this guy online by searching similar things yet somehow that has eluded me.


Again, thank you.