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Strange Sea Swirls: What's Behind Speedy 'Smoke Ring' Vortices?
JAY GORY, MANAGING EDITOR, science
Nine of these modons, which were spotted around Australia between 1993 and 2016, were analyzed using satellite imagery and ocean temperature data. Regardless of how the modon is formed, its overall structure is the same: The modon consists of two vortices spinning in opposite directions of each other, with their tails joining together beneath the surface of the water. YouTuber "Physics Girl" illustrates the half-ring well in a video where she uses food dye to show how two separate vortices interact and join together. read more


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