God Doesn’t Make Junk

On a planet filled with living organisms that are wonderfully equipped to travel though water, one surprising creature stands out as the most efficient swimmer of them all—the jellyfish. This remarkable animal has no skeleton, blood or heart, yet it’s designed to expend the least amount of energy as it journeys through the oceans of the world. The biological engineering involved has captivated scientists who seek to re-create its unexpected genius in the form of robotic locomotion.