pl23_fish7921.jpg
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https://www.noaa.gov/media/digital-library-photo/pl23fish7921jpgDescription
Studying mating habits of a pair of tanner crabs. To calculate the sustainableharvest that can be expected, biologists must have a thorough understandingof the life history of a species and how it reacts to changes in theenvironment.
Credit
NOAA Central Library Historical Fisheries Collection; P. 88 of Our Changing Fisheries 1970 Centenary NMFS centenary volume
Collection
Historic Fisheries