An autonomous submersible structure includes a cage for protecting cargo contained within a volume of the cage, two or more independently operated propellers, and a raised platform. The raised platform includes a plurality of sensors and computers that detect at least one of: water quality, water pressure, or objects in the vicinity of the cage. The raised platform includes a navigating system that controls a direction of travel of the cage based on feedback provided by the plurality of sensors and computers, and a power generator that provides power to the sensors, the navigating system, and the feeding mechanism. The autonomous submersible structure includes a ballast for counterbalancing the weight of the raised platform, wherein the navigating system controls the two or more independently operated propellers to alter the direction of travel of the cage, and wherein the raised platform is environmentally sealed and a portion of the raised platform is positioned above water level.
