Brandon Senger, supervisory fisheries biologist for the Nevada Department of Wildlife, gets into the water at Devils Hole for a biannual count of the Devils Hole pupfish at Devils Hole in the Ash Meadows National Wildlife Refuge on Saturday, April 7, 2018. (reviewjournal.com)
Jeffery Goldstein, fish biologist and park dive officer for Death Valley National Park, prepares to leave Devils Hole after the first dive of a biannual count of the Devils Hole pupfish at Devils Hole in the Ash Meadows National Wildlife Refuge on Saturday, April 7, 2018. (reviewjournal.com)
A population of Quitobaquito pupfish is thriving in the pool, connected only to the goodwill of children. (discovermagazine.com)