Full website post with pictures, and release by the US Navy here:
VIRGINIA BEACH, Va. (NNS) — The U.S. Navy completed tests on the GhostSwimmer unmanned underwater vehicle (UUV) at Joint Expeditionary Base Little Creek-Fort Story (JEBLC-FS), Dec. 11.
GhostSwimmer is the latest in a series of science-fiction-turned-reality projects developed by the chief of naval operations' Rapid Innovation Cell (CRIC) project, Silent NEMO.
Silent NEMO is an experiment that explores the possible uses for biomimetic, unmanned underwater vehicles in the fleet.
Video courtesy of the US Navy:
Jesse Hyatt of Unit: Navy Public Affairs Support Element East