Ephydridae Feeding on Bacterial Mats in Runoff from Sapphire Pool Yellowstone National Park Ephydridae Feeding on Bacterial Mats in Runoff from Sapphire Pool Wyoming 2022 Jun 23, 2022 View Larger Map Show Full EXIF Ephydridae - WikipediaWikimedia Foundation, Inc.Contributors to Wikimedia projectsSapphire Pool (U.S. National Park Service)
