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But Lampetra's unique propulsion system could also have useful applications, as it has proved an efficient way to move a machine through water.
ECONOMIST: Robots
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Dr Dario and Dr Stefanini have built him a device called Lampetra (pictured top), which is made of circular segments modelled on the lamprey's cartilaginous vertebrae.
ECONOMIST: Robots
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Lampetra has eyes, in the form of small cameras, and can use information about colours and shapes that these cameras gather in order to get around obstacles.
ECONOMIST: Robots