A moving body includes a drive that causes the moving body to move, a light emitter that emits light, and a receiver that receives response information indicating that an operator who operates the moving body, an observer who observes the moving body, or a supervisor who supervises the moving body sees the light. The moving body also includes a detector that detects a position of the moving body, a recorder that records the position of the moving body, and a controller that, when the receiver receives the response information within a fixed time since the light emitter emitted the light, causes the recorder to record the detected position of the moving body, and when the receiver does not receive the response information within the fixed time, outputs to the drive a control command that causes the moving body to move to the last recorded position.