Adelie penguin is a species of penguin that inhabits the coastal areas of Antarctica. This species is also known by several other names such as pygoscelis adeliae, Antarctic penguin, Adelie land penguin, Adelie coast penguin, Adelie land crested penguin, and sea brush-tailed penguin. Adelie penguins are known for their distinct black and white plumage and are one of the smaller species of penguins. They predominantly feed on krill and are adapted to survive in the harsh Antarctic climate. The Adelie penguin serves as an important indicator species for researchers studying the effects of climate change on polar ecosystems.