Bionic Jellyfish Swim Faster, More Efficiently

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. The researchers behind the project envision a future in which jellyfish equipped with sensors could be directed to explore and record information about the ocean. 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 experime