Underwater Science Magical Jellyfish This fun Toy is a colorful magical Jellyfish. Jellyfish swim up and down in a plastic soda bottle,and just by squeezing it, according to the principles of fluid mechanics. And by this time kids will ask how does that work? you can Detailed instructions explain the science behind the fun. This Magical Jellyfish is a fun, educational, and hands-on toy for the engineering and marine biology-minded scientist.

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