Spotters looking for signs of tuna such as logs on surface or agitated water. Tuna tend to congregate around floating logs or other floating objects on the surface.
Image ID: fish2130, NOAA's Fisheries Collection • High Resolution Photo Available
Publication of the U.S. Department of Commerce, National Oceanic & Atmospheric Adminstration (NOAA), NOAA Central Library NOAA Privacy Policy | NOAA Disclaimer Last Updated: April 23, 2007