Kenai River Salmon

Sockeye salmon swim near the bottom of a river. The DIDSON was
rolled 90° to show the bottom contour and fish height above the bottom.
Courtesy of Suzanne Maxwell, Alaska Department of Fish and Game

Sockeye salmon swim near the bottom of a river. The DIDSON was
rolled 90° to show the bottom contour and fish height above the bottom.
Courtesy of Suzanne Maxwell, Alaska Department of Fish and Game
THIS IMAGE WAS CAPTURED BY OR FEATURES A DIDSON