What's unique about rockhopper penguins? Why, their hop, of course! Unlike most penguin species who waddle or slide on land, rockhopper penguins use their strong legs to hop, skip, and jump their way over rocky terrain. Just look at them go! We spotted these rockhopper penguins while on expedition in Tierra del Fuego, at the southernmost tip of South America. #PenguinAwarenessDay