What is this unknown bubble looking thing?

[Rich440]

Never seen it before and I just got up and seen it while my lights were turned off
So I turned my lights on for a quick pic

 

[mr_X]

It looks like a bleached out bubble tip anemone to me. Did you used to have one that perhaps disappeared?

 

[Rich440]

No but I did get some new rock so maybe the guy before me had one
Idk

 

[Sniperhank]

I'm in agreement with Doug on this. What kind of lighting do you have over your tank? Anemone require intense lighting and stable, pristine parameters to thrive.

 

[Rich440]

I have the dsuny programmable led setup
My water is perfect and the lighting is def. intense enough to support an nem.