Why Penguins Can'T Fly

Many, many years ago, the relatives of todays penguins flew over the ocean and dove down into the water for food. As time went on, flying became unnecessary for their survival. They didnt have any enemies on land that would necessitate escape by air. Penguins spent most of their time in water; air wings gave way to flipper-like water wings. This change made penguins able to fly through water, usin...