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What Can Jellyfish Teach Us About Fluid Dynamics?

The Joy of Why

CHAPTER

How Jellyfish Are Using Vortex Rings to Contract Their Belt

Aquariums are transparent, so it's hard to see how the water is moving around animals. Researchers developed new technologies to help them measure that water surrounding jellyfish. They used lasers and video cameras to capture swirling currents in really exquisite detail. Some species of jellyfish rarely swim, but when they do it's in a survival mode.

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