How the Walrus Stays Warm in Cold Waters
In How the Walrus Stays Warm in Cold Waters, narrator Sir David Attenborough explains how walruses conserve heat and how an annual visit to land helps them with body regulation. Learn how their color changes from sea to land. This video is excerpted from BBC’s Blue Planet, a definitive documentary series diving into the mysterious depths of the sea to discover the natural history of the world’s oceans and the rarely seen marine life that reside there.
Lesson Express
Q: How does the walrus conserve heat when it’s in the ocean?
A: The walrus keeps its blood in the core of its body.
Q: Why does the walrus's skin turn from white to pink when it comes on land?
A: Its outer blood vessels dilate and its blood is able to come from its core and return to its skin.
Q: Why do animals like the walrus return to the land?
A: They return to the land to give their bodies a break from having to regulate their body temperature in the cold ocean.