Biologists analyze their water samples.
Biologist of the Research Group on Biodiversity at the University of Duisburg-Essen on an excursion in the nature reserve in the Lower Rhine at Grietherbusch.
Size: 5616px × 3744px
Location: Lower Rhine nearby Grietherbusch, North Rhine-Westphalia, Germany
Photo credit: © Olaf Doering / Alamy / Afripics
License: Licensed
Model Released: Yes
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