Here is another video by, Kevin, TheBackyardScientist. Kevin observes that dolphins as well as several YouTube personalities have made vortex rings. So not to be outdone, he attempts to build a machine to produce his own in the form of bubble rings. But, of course, he adds TheBackyardscientist’s twist to his endeavor by using propane to create the bubble rings and then setting them on fire underwater with a 40,000 volt cattle prod. Enjoy!