American newsreel item about US navy's tests on porpoises in captivity.
Unissued / unused material.
American newsreel item.
US navy makes sound tests of porpoise, California, United States of America (USA).
Various shots porpoise swimming around in large tank. Various shots as microphone is lowered into tank to record porpoise's bark, pan to show cameraman and sound recordists at work. CU porpoise barking, he turns and swims away.
Date on dope sheet is 13/02/1961.