What the heck is this?

[MattGecko]

I've had an Aiptasia farm before , this little guy is different. It doesn't seem to be jelly like, it also looks to be white & perfectly round (like a worm). Head and body are the same size.

Any ideas??

 

[kennerd]

There are harmless varieties of glass anemones. I;ve had little clear guys similar to yours last a long time, then dissapear one day.