Gray whale marking dart. Experimental markers to visually follow the
the same whale for great distances. Roll of 4-inch wide, 3-ft. long vinyl
streamer wrapped in roll to unfurl on side of whale after penetration of dart
from cross-bow arrow.
Image ID: fish9840, NOAA's Historic Fisheries Collection Location: California, La Jolla Photographer: Raymond M. Gilmore, FWS Credit: NOAA Central Library Historical Fisheries Collection