Jake Gregg, left, a fish biologist for United States Geological Survey Marrowstone Marine Field Station, helps identify a gunnel fish with Dan Cooper, fisheries biologist, during a beach seining at Naval Magazine Indian Island in Port Hadlock, Washington April 29, 2021. Biologists use books to help identify different fish by focusing on specific details on the organisms.

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Size: 1936px × 1291px
Photo credit: © Operation 2021 / Alamy / Afripics
License: Licensed
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Keywords: fish, marrowstone, navfac, navmag, navy, usgs