Although this video of toroidal bubbles has been around for quite a few years, it still is just as captivating now as it was back in 2010. What are toroidal bubbles? Also known as toroidal vortices, a toroidal vortex is a region of rotating fluid moving through the same or different fluid where the flow pattern takes on a toroidal (doughnut) shape. These are produced by dolphins, beluga whales, humpback whales, volcanoes, hydrogen and atomic bombs and man.
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