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

DARPA: Angler Program Awards Contracts to Advance Autonomous Underwater Systems · November 15, 2019 · DARPA Angler Leidos L3Harris Northrop Grumman SoarTech EdgeTech Kitware

NATIONAL INTEREST: Navy Of The Future: Submarines Could Soon Become Underwater Drone Motherships · November 7, 2019 · Great Underwater Wall China DARPA