Uploaded November 2011 | Updated September 2026, 2 weeks ago
oneworldoneocean.org -- Too many important things are riding on the health of the ocean. Join Greg MacGillivray, founder of One World One Ocean, in a campaign to save our seas.
oneworldoneocean.org -- Too many important things are riding on the health of the ocean. Join Greg MacGillivray, founder of One World One Ocean, in a campaign to save our seas.
![Best Bubble Ring Ever! [HD]](https://i.ytimg.com/vi/pY5-J9X1uvw/mqdefault.jpg "Best Bubble Ring Ever! [HD]
This could very well be the most beautiful bubble ring (also known as a toroidal vortex) ever recorded on film. This clip is from the award-winning IMAX classic, DOLPHINS by MacGillivray Freeman Films, founders of the One World One Ocean Campaign. Learn more about dolphins and how you can help protect the ocean at http://oneworldoneocean.org.
A toroidal vortex, also called a vortex ring, is a region of rotating fluid moving through the same or different fluid where the flow pattern takes on a toroidal (doughnut) shape. The movement of the fluid is about the poloidal or circular axis of the doughnut, in a twisting vortex motion. Examples of this phenomenon are a smoke ring or a microburst. Vortex rings were first mathematically analysed by the German physicist Hermann von Helmholtz, in his paper of 1867 On Integrals of the Hydrodynamical Equations which Express Vortex-motion Smoke rings have probably been observed since antiquity since they can easily be blown from the mouth.
http://en.wikipedia.org/wiki/Vortex_ring")
