gentoo penguins on iceberg in antarctica, chinstrap penguins nearby

social media facebook post instagram size mobile gentoo penguins iceberg antarctica chinstrap wildlife southern ocean marine animals bird species breeding season colony seabirds oceanic ecosystem south pole predatory birds fishing ice formations environmental conservation climate change polar region biodiversity shelves cold weather glacial habitat penguin chicks antarctic peninsula hemisphere zoology circle icy landscape freezing temperatures avian research watching remote location natural habitats scientific study icebergs breaking