Divers descend toward the water of Devils Hole for a biannual count of the Devils Hole pupfish in the Ash Meadows National Wildlife Refuge on Saturday, April 7, 2018. Patrick Connolly Las Vegas R …

Divers descend toward the water of Devils Hole for a biannual count of the Devils Hole pupfish in the Ash Meadows National Wildlife Refuge on Saturday, April 7, 2018. Patrick Connolly Las Vegas Review-Journal @PConnPie