Adelie penguins (Pygoscelis adeliae) with ecotourism ship 'Polar Star' in background, Paulet Island, Antarctica, Southern Ocean

aves sphenisciformes spheniscidae bird birds penguin penguins oceanic marine sea flightless flight less sub antarctic subantarctic adult adults group groups social group icebergs ice winter snow tourist tourists tourism ecotousit ecotourism ecotourists people boab boats ship ships eco