: They possess thick blubber and waterproof feathers coated in oil from a preen gland to stay dry and warm.

: Chinstrap penguins have been found to nod off over 10,000 times a day for just seconds at a time to stay vigilant. Social & Breeding Life

: Both parents usually take turns guarding the nest and foraging for fish, krill, or squid.

: The Emperor penguin can dive to depths of 550 meters (1,800 feet), the deepest of any bird.

: Most species are monogamous during the breeding season. Some, like the Fjordland crested penguin , form lifelong bonds.