Penguins seem a bit out of place on land, with their stand-out black jackets and clumsy waddling. But once you see their grace in the water, you know that’s where they’re meant to be–they are ...

Penguins are flightless birds, but their wings are still very much a part of their mobility. Instead of gliding through the air, penguins use their wings—which evolved into flippers—to dive, cruise, ...