The Chinstrap penguin is easily recognized by the thin black band that runs under its chin, giving the species its common name. They are found primarily in the Antarctic and subantarctic regions, especially on rocky, ice-free coastlines and islands such as the South Sandwich Islands, South Orkney Islands, and Antarctic Peninsula. They are among the most numerous penguin species in the world, and while their global population remains large, environmental changes in their icy southern habitats have made them an important species for scientific monitoring.