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pl23_fish5610.jpg

Artist's concept of backing down, a maneuver which shifts the weight,causing the back end of a tuna purse seine (net) to sink beneath thesurface allowing porpoise that may be in the net to swim out over the top,while the tuna remain inside

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https://www.noaa.gov/media/digital-library-photo/pl23fish5610jpg

Description

Artist's concept of backing down, a maneuver which shifts the weight,causing the back end of a tuna purse seine (net) to sink beneath thesurface allowing porpoise that may be in the net to swim out over the top,while the tuna remain inside.

Credit

NOAA Central Library Historical Fisheries Collection

Collection

Historic Fisheries