Biologists count fish on the shallow shelf in Devils Hole, while divers simultaneously count fish in the cave system to depths of approximately 110 feet. Pictured front to back: Kevin Wilson - NPS Aquatic Ecologist, Devils Hole Program Manager, Death Valley National Park Jennifer Gumm - FWS Fish Biologist/Facility Manager Ash Meadows Fish Conservation Facility Michael Schwemm - FWS Senior Fish Biologist, Southern Nevada Fish and Wildlife Office Credit: Olin Feuerbacher/USFWS
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