Adult gentoo penguins (Pygoscelis papua), returning and coming from the sea at Booth Island, Antarctica, Southern Ocean, Polar Regions

gentoo penguins pygoscelis papua antarctica booth island southern ocean polar regions wildlife sea returning colony birds nature ice penguin behavior marine life aquatic mammals animal migration rocky shore cold climate antarctic ecosystem coastal habitat feeding social interaction flightless birds habitat mature penguins nesting natural habitat southern hemisphere avian species conservation preservation biodiversity penguin colony krill saltwater ice floes animal behavior environmental changes zoology antarctic fauna breeding season snow icebergs penguin chick ocean currents seabirds shorelines wildlife observation natural environment