Soft robotic fish combines high-speed swimming with 3D maneuverability

Researchers from the Shenyang Institute of Automation (SIA) of the Chinese Academy of Sciences have developed an electrohydraulically actuated soft robotic fish that can swim at high speeds and perform agile three-dimensional (3D) maneuvers. The soft robotic fish addresses a longstanding design challenge by combining a rigid–flexible coupled propulsion system with dynamic buoyancy regulation. This allows for fast propulsion without sacrificing maneuverability.