Insulation – Did you know?

The video discusses how marine mammals such as walruses, sea lions, and dolphins survive in cold environments. It highlights the role of blubber, a thick layer of fat, which acts as an effective insulator, sometimes reaching up to 12 centimeters in thickness, helping these animals maintain their body heat in the world's coldest regions.

What is the significance of blubber for marine mammals during winter?

Name at least two marine mammals mentioned in the text.