Penguins are flightless birds primarily found in the Southern Hemisphere, especially in Antarctica. They are known for their distinctive black and white coloring, which helps them blend into their ocean environment. Penguins are excellent swimmers, using their wings as flippers to propel themselves through the water in search of fish and other marine food. There are 18 different species of penguins, ranging in size from the small Little Blue Penguin to the large Emperor Penguin. Penguins typically live in colonies and are social animals, often engaging in behaviors such as preening and vocalizing to communicate with one another.