Bionic Jellyfish Swim Faster - Comparison

Engineers at Caltech and Stanford University have developed a tiny prosthetic that enables jellyfish to swim faster and more efficiently than they normally do, without stressing the animals. This side-by-side comparison shows how the electronic pulse helps the jellyfish move faster. Jellyfish do not have a brain or pain receptors, but they have been found to secrete mucus when stressed, and no such secretion was observed in this experiment. In addition, the jellyfish went back to swimming normally once t