Penguin behavior is endlessly fascinating. In the Antarctic spring, hundreds of Gentoo penguins parade before us, reestablishing their bonds, mating, staking their claim, and thievishly stealing stones from one another for their nests. And you are astounded by the spectacle of their massive rookeries at the height of the nesting season—with thousands of parent pairs and, depending on your departure date, downy chicks. The photo ops are simply incredible. And while penguins are delightful in films and nature documentaries, the “3D” experience of literally being there among them, watching the often madcap business of penguin life, is simultaneously uplifting and humbling: This is the animal kingdom indeed!