What's going on?
A vortex is a swirling parcel of fluid. 'Torus' is the name for the shape of a doughnut or a ring. The proper name for a bubble ring, therefore, is a toroidal vortex. Apart from being one of the most mesmerising and joyful things to look at, these toroidal vortex bubble rings are also surprisingly easy to blow. You don't need any special skills, fancy equipment or expert knowledge of physics. Nature does all the work for you.
if you can't get the video working at the link here is one from Youtube: