The Department of Homeland Security’s (DHS) Science and Technology Directorate (S&T) is funding the development of an unmanned underwater vehicle (UUV) designed to resemble a tuna, called the BIOSwimmer™. Inspired by the real tuna, BIOSwimmer™ is a UUV designed for high maneuverability in harsh environments, with a flexible aft section and appropriately placed sets of pectoral and other fins. Boston Engineering Corporation’s Advanced Systems Group (ASG) in Waltham, Massachusetts, is developing the BIOSwimmer™ for S&T.