Manta Ray

FORBES: DARPA Building An Energy-Harvesting Submarine That Never Runs Out Of Power · February 12, 2021 · Manta Ray DARPA

NAVAL NEWS: DARPA Selects Lockheed Martin for “Manta Ray” extra-large UUV program · March 6, 2020 · Manta Ray DARPA Lockheed Martin XLUUV