Question

Why penguins don't fly?

Answer 1

Penguins lost the ability to fly as they developed more efficient wing-propelled diving skills that allowed them to better forage for food at increasing depths of the ocean. In fact, penguins are so suited for an aquatic life that their agile swimming looks quite similar to a bird flying through the air. Their smooth feathers trap air, which makes them more buoyant in the water and protects them from the cold water.
Penguins are adept at swimming and scientists have claimed that no bird can excel at both.