Starfish coordinate hundreds of feet to hop about—and they do it without a brain.

The “incredibly coordinated” movements across tiny tubular appendages protruding from under each of the five arms apparently work simply by responding to increased loads. With no central control centre, the individual feet contribute to a global, unified movement of the whole animal in a way that could inspire future robotics, says Eva Kanso at the University of Southern California, in Los Angeles.

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