This huge sea creature is not a fish--it’s a mammal! Like all mammals, whales need air to live and they must come up to the top of the water often to get it. They breathe air in and out through the blowhole on their back. When whales sleep, they stay on the top of the water. What’s the best way to distinguish a fish from a mammal that lives in the sea? Well, a fish has a vertical fin and a sea mammal, like a whale, has a horizontal fin.
Penguins are birds that can’t fly! Instead, they swim. Their bodies are covered with black and white feathers; they don’t use their wings to fly—they use them like flippers to swim. Penguins spend about 75% of their time in the water, where they hunt for food.
Penguins live in the Southern Hemisphere-- in Antarctica. But a big population of penguins also lives in New Zealand, Australia, Chile, Argentina and South Africa. There are no penguins at the North Pole.