Adult gentoo penguins (Pygoscelis papua) mating on Barrentos Island in the Aitchi Island Group, South Shetland Islands, Antarctica

nobody sealife sea life adult adults barrentos island aitchi island group south shetland islands antarctic circle antarctica bird birds penguins seabird seabirds two animals gentoo penguin pygoscelis papua mating reproduction sex male female pair cloaca genitals anus bottom bum