USGS biologist piloting an UAS for Pacific walrus survey, Alaska

USGS wildlife biologist, Anthony Fischbach, piloting an unmanned aerial system (UAS) for use in surveying walruses while they rest on shore.  The UAS is flown above 300 feet altitude such that it enables survey data collection with minimal risk to the walruses.  (Photo taken during USGS research efforts permitted under US Fish and Wildlife Service Permit No. MA801652-7.)