The invention discloses a
robot octopus comprising a cylindrical plastic
barrel serving as a
robot octopus body, wherein claw parts are arranged below the plastic
barrel, a claw part action driving mechanism used for driving the claw parts to perform grabbing actions is arranged in the plastic
barrel, a sinking and floating mechanism used for driving the
robot octopus body to sink and float is arranged in the plastic barrel, four water pumps uniformly distributed along the circumference are fixedly installed on the outer wall of the plastic barrel, the drainage directions of the four water pumps are respectively front, back, left and right, and the four water pumps control the movement direction of the robot octopus; and a
control system controls the claw part action driving mechanism, the sinking and floating mechanism and the water pumps to work. The robot octopus disclosed by the invention has reasonable structure and excellent working performance, provides more extensive entertainment items for the youngsters and children, and brings more rich life for families.