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Animal ScienceGeneralMad Science

Jellyfish in a Bottle

By August 1, 2015March 30th, 2021No Comments


Part science, part craft and 100% fun, this great jellyfish-in-a-bottle project brings your very own jellyfish to life! Using everyday household items like plastic grocery bags, plastic water bottles, thread, water and food coloring, you can create a miniature aquarium of faux floating jellyfish.

– Plastic grocery bag
– plastic water bottle
– thread
– scissors
– food coloring (optional)


Step 1: Flatten the bag & cut out a single circle.


Step 2: Fold the center into a tiny balloon and tie it off loosely with thread.


Step 3: Cut strips of the bag into tentacles.


Step 4: Pour some water into the head section to make it able to sink.

Step 5: Fill up the water bottle, adding food coloring. We used blue to make it look more ocean-like!

Step 6: Put your jellyfish into the bottle and turn in upside down to play.


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