Originally Posted by cdangel0

I have no scientific proof - but I can share my experiences over the years.

The RBTA I have pictured on the 1st page was a small juvenile when I got it. It bubbled. As it matured it lost it's bubbles. So theory 1 us that they only bubble during adolesence.

However when that one split the clone did not bubble. So we may have to take it a step further and say that only truely young anemones bubble.

I've also had nems that bubbled until they went in to a tank with a lot of flow at which time they lost their bubbles. Which lends itself to the theory that they bubble for bouyancy.
The two I recently purchased are in different flows, the lower flow nem has more of a bubble to it's tenticles then the one in higher flow.

I personally believe that the amount of flow dictates whether or not they KEEP their bubbles. But once they are gone, they are gone for good. I also believe that once and anemone matures it no longer requires the aide the bubble provide in keeping the tenticles in the current to capture food.