It's a bird! It's a plane! It's a... jellyfish?"

  
 

AirJelly is the first indoor flight object with peristaltic drive. This new drive concept, with propulsion based on the principle of recoil, moves the jellyfish gently through the air.

 

video at http://www.festo.com/cms/en-us_us/5890_6299.htm#id_6040

 

Check out the links to their other inventions too.

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