Science and education type underwater bionic robotic fish

A fish body is divided into a head, a trunk and a tail fin, the head is connected with the trunk, pectoral fins are symmetrically installed on the two sides of the trunk, the left pectoral fin and the right pectoral fin are driven by a left pectoral fin motor and a right pectoral fin motor respectively, a sealed cabin is arranged in a trunk shell, and the tail fin is arranged in the sealed cabin. A submersible pump is arranged between the head and the sealed cabin, the dorsal fin is mounted at the top of the trunk, the tail handle is connected with the trunk through a waist joint and a transverse joint, the waist joint and the transverse joint are driven by a driving motor, and the tail fin is connected with the transverse joint. By means of the streamlined shell, the pectoral fin, the tail fin and other components, the requirement for bionic streamlined appearance design is met; according to the utility model, the exploration of marine organisms by students is satisfied, the marine knowledge and classroom li