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![Gray whale marking dart fish9840.jpg Gray whale marking dart](/sites/default/files/styles/max_1300x1300/https/s3.amazonaws.com/s3-east-testmedia-noaa.woc.noaa.gov/dam/Photos/legacy/pl23_fish9840.jpg?itok=yrWEidwH)
Description
Gray whale marking dart. Experimental markers to visually follow thethe same whale for great distances. Roll of 4-inch wide, 3-ft. long vinylstreamer wrapped in roll to unfurl on side of whale after penetration of dartfrom cross-bow arrow. (Image credit: NOAA Central Library Historical Fisheries Collection | Raymond M. Gilmore)