Penguins are interesting creatures. They are bird, but they cannot fly.

Millions years ago, they had wings. these wings changed as th bird to their environment.

Penguins’ principal food were fishes. Penguins needed to be able to swim to find there food,

SO eventually their wings evolved into flipper that enable it to swim throuhg water with speed

 and ease. Penguins spend most of their lives in water. but, they lay their egg on land.