Sea Star Locomotion Inspires Decentralized Robotics Research

Researchers from the University of Southern California, University of California Irvine, and University of Mons in Belgium have published a study in PNAS examining how sea stars move without centralized control. The team, led by Eva Kanso of USC's Kanso Bioinspired Motion Lab, discovered that sea stars use independent tube feet that respond to local environmental feedback rather than commands from a central brain. This decentralized system allows the animals to continue functioning even when limbs are damaged or lost. The scientists developed mathematical models demonstrating how similar principles could be applied to robotics, creating machines with parts that operate autonomously and adapt to terrain variations. Collaborator Matt McHenry from UC Irvine noted this approach could lead to robots that function in harsh environments where electronics might fail. The research represents a broader trend in bioinspiration, where scientists study animal movement to inform robotic design, as seen in snake-inspired robots from Carnegie Mellon University and soft robotic wings developed by an international team. While prototypes remain limited, the sea star's resilience offers promising directions for creating more adaptable robotic systems.