Iodine forms multiple vortex rings as it falls through water after falling through canola oil.

By Anna Gilgur for Spring 2013 Get Wet.
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Iodine forms multiple vortex rings as it falls through water after falling through canola oil.

A snake and eagle can be seen as tea falls from a tea bag due to the Rayliegh-Taylor instability in this inverted image.

Food dye falling through water exhibits the Rayleigh-Taylor instability.

Dyed mineral oil injected into clear mineral oil forms layers of vortex rings.