National Geographic : 1971 Sep
B USINESSLIKE FISHERMAN, a cormorant (right) seizes a scaly victim. Specially adapted eyes aid this skillful underwater hunter; unlike most vertebrates, it can vary the shape of both lens and cornea to compensate for refraction. The bird's broad webbed feet, clumsy as snowshoes on land, drive it through the water in fish-catching bursts of speed. A throat-bulging gulp will dispose of its catch.