The king penguin regularly dives to depths of 650 feet on fishing expeditions. Its long, slender skull and bill are perfectly adapted to its aquatic lifestyle. The penguin's streamlined features allow it to swim as fast as 6 feet per second. Dense bones reduce buoyancy, helping the bird sink far enough to catch fish and squid.
Reprinted from Skulls, by permission of Black Dog & Leventhal Publishers. Copyright © 2012