An MIT press release described a joint project with Ocean Farm Technologies, Inc. to develop the next generation of aquaculture. The result is a 62 foot diameter geodesic dome that is shark-proof and self-propelled. Large, slow moving propellers move the dome as needed and also keep the water moving through the enclosure to assure sufficient oxygen levels for the fish. Traditional aquaculture techniques rely on anchored cages near the shore. Using the new self-propelled domes, vast areas of deep ocean would become available for fish farming. For more see the MIT Sea Grant News article and video of new fish farming pods. There is also a Mass High Tech article on the system.