Meet Envirobot, a robotic eel who slithers along the surface of the water, seeking the source of water pollution. The future is here, and it's full of swimming robots! We meet members of the team behind Envirobot, Bezhad Bayat and Alessandro Crespi. They tell us what it takes to turn a swimming animal into a robot - the twists, the turns, the technology, and the math.

If you could design a robot based on a swimming animal, what would it be and why? What would it do? We want to hear your ideas, and see your designs! Email us at tumblepodcast@gmail.com.

Check out a video of Envirobot and terrifying photos of lampreys on our blog, at sciencepodcastforkids.com!

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Happy Holidays and have a great New Year to all our listeners!!