Why Don't Penguins' Feet Freeze?

The video explores how penguins survive extreme cold, focusing on their unique adaptations. Penguins maintain their body warmth with fat and feathers, while their feet are adapted to withstand cold through countercurrent heat exchange. This mechanism allows them to conserve energy by keeping their feet just above freezing. The video also compares this adaptation to human physiology, highlighting differences in cold resistance.

What special adaptations do penguins have to keep their feet warm in extreme cold?

How do penguins prevent their feet from freezing while walking on ice?

Explain the concept of countercurrent heat exchange in penguins.

What are the differences between human and penguin feet in terms of cold resistance?

Why is it not advisable for humans to walk barefoot in Antarctica?