Extraordinary and beautiful examples of toroidal vortices

…produced by dolphins, beluga whales, humpback whales, volcanoes, hydrogen bombs, and man.

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.

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