I found this video,i hope it is ok to post youtube
the beginning of it shows an animation bubbles,and i was wondering if it can be done with Gimp
the rest of the video is wonderful to watch too (except the Abomb)
I did not know sea animals could do those rings,amazing !

I went ahead and embedded your video to view here.

Well I enjoyed that but not sure how that dude blew the oscillating toroids at the end. Had no idea dolphins and beluga whales could blow rings either; cool stuff.

Amazing Pirate, Looks like a good life they have down there... yes those bubbles at the beginning would be a challenge allright.

Glad You all like it I stumbled on it by accident

Rod,thank you

You are welcome.
The only thing i can think of is a cross between Wave Tank and Reflex.
Wave Tank for the animation - http://registry.gimp.org/node/24330
Reflex for the design and color - attached in zip (place it in your scripts folder)
And of course a ring photo or image (many smoke ring images available online).

Then maybe create a few ring layers - run them by Reflex, and then re size them to 2-3 different sizes and animate them with wave tank.That might work.

Thanks again Rod
i d/ld both scripts
the reflex is showing under alpha to logo,but it is grey ,i can't open it.
i have 3 layres of rings i can run wave,but i can't open reflex

It has to have a selection on a layer with an alpha channel first.

This is kind of what i was thinking about.Except you want a couple rings together.