Penguins are flightless birds that have adapted to a more aquatic lifestyle proof of this being that they spend half of their life in the frozen waters of the southern hemisphere. Something that most people don't know about penguins is that they are one of the most ancient still existing birds to date, the oldest penguin species, the Waimanu manneringi, lived 4 million years after the dinosaurs and more then 50 million years before the earliest close relatives of modern humans.
