Kathleen-Cullen-and-Dimitri-Rucker-sampling_FWS.jpg

Kathleen-Cullen-and-Dimitri-Rucker-sampling_FWS.jpg

Kathleen Cullen and Dimitri Rucker, biologists from the Service's Chesapeake Bay Field Office, collect water samples that may or may not contain traces of amphipod DNA from a spring in Rock Creek Park.
Image
Media Usage Rights/License
Public Domain
Subject tags
Science