Collecting dragonfly larvae for the Dragonfly Mercury Project

man wearing a life jacket holding a dip net

Detailed Description

Between 2009 and 2018, scientists conducted a national scale assessment of mercury accumulation in the National Park System using dragonfly larvae as biosentinels (species that accumulate a pollutant in their tissues as an index of exposure to other organisms without significant adverse effects to the biosentinel) through a citizen science network called the Dragonfly Mercury Project.


Image Dimensions: 2592 x 3888

Date Taken:

Location Taken: Port Angeles, WA, US


C. Eagles-Smith, USGS