Penguins stay cozy in the cold ice water because they have a thick layer of fat under their skin and lots of soft feathers all over their bodies. The fat works like a warm blanket inside them, and the feathers help keep the cold out and the warm in.
Here are some easy ways to say it:
- Penguins have a warm coat made of feathers and a soft blanket of fat to keep them warm in chilly water.
- Under their skin, penguins have a squishy layer of fat, and their feathers are like warm clothes that stop the cold from getting in.
- Think of penguins wearing a secret jacket made of feathers and fat that keeps them warm when they swim in icy water.