Ocean filter drone / Drone

An ocean filter drone can remove waste, oil, and green algae. Using the built-in electrode at its center, when electrolysis occurs in the water by the anode and cathode electrodes, hydroxide metal is formed. That carries a positive charge, and aggregates the green algaes of an negative charge. The lower propeller makes the oxygen drop so that the green algae floats on the sea, and filter sucks the floating green algae. The drone can separate the filter part and the wing part, and it's easy to replace filter. The drone has a red light when it needs charging and a blue light during operation; a yellow signal can be used to act as a buoy at night.