Picture trying to survive in the ice and cold seas of Antarctica. For many animals, a habitat like this would be impossible. Yet the emperor penguin, a bird about 1.1 meters tall, thrives there, thanks to features that scientists call adaptations: traits that help a living thing survive in its environment.
Consider tightly packed, waterproof feathers: this adaptation trap warm air and keep out icy water. The word waterproof refers to able to keep water out. Equally important is flippers instead of flying wings, which help it swim fast and dive deep. Without these traits, the emperor penguin would struggle to last a single season.
As a carnivore, the emperor penguin is an animal that eats other animals; it depends on fish, squid and krill. Its behavior matters as much as its body: it huddles in huge groups to share warmth during winter storms. Behaviors like this are adaptations too, even though you cannot see them in a photograph.
The next generation faces the same challenges. Young emperor penguins, called chicks, depend on their surroundings and on adult care. The father keeps the egg warm on his feet for about two months while the mother hunts at sea.
Perhaps most remarkable of all: emperor penguins can dive deeper than 500 meters to find food. Facts like this remind us that every animal's body tells a story about the place it lives.