Pinguoin -

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

: Their distinctive black-and-white look is functional camouflage: a dark back blends with the ocean floor for predators above, while a white belly mimics the bright surface for predators below. Extreme Adaptations : Pinguoin

are world-famous as flightless, tuxedo-clad birds, they are actually highly specialized marine hunters. Most of the 18 to 21 species live in temperate coastal waters rather than the deep Antarctic. Key Biological Features : They possess thick blubber and waterproof feathers

: Both parents usually take turns guarding the nest and foraging for fish, krill, or squid. Most of the 18 to 21 species live

: 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

: Instead of wings for flight, penguins have stiff, scale-like flippers used for "flying" underwater.