The Stellwagen Bank National Marine Sanctuary of the Oceanic Energy Administration (BOEM) and the National Oceanic and Atmospheric Administration (NOAA) announced Wednesday the successful digital acoustic tagging of 14 sei whales off the coast of Massachusetts. The sei whale is one of the most endangered large whales in the North Atlantic. This is the first time researchers have successfully tagged an endangered species in the United States using an unmanned aerial vehicle (UAV) or drone. Drones enable researchers to target specific animals in a group or to tag groups.