Whale Breath Hold

In the picture

1. 1Badge 1 sits on the small jar beside the human diver, which stands for a smaller blood volume.
2. 2Badge 2 sits on the large jar beside the whale, which stands for a much larger blood volume.
3. 3Badge 3 sits on the tightly packed red discs, which stand for blood with more red cells.
4. 4Badge 4 sits on the whale’s cutaway muscle, which stores oxygen for the dive.
5. 5Badge 5 sits on the narrowed vessel to the heart and brain, where blood flow is kept during the dive.

Examples

• A camel storing water before a long desert walk.
• A battery saving power for only the most important devices.

Quiz: Whale Breath Hold (Age 13)

1. 1

   Which blood feature helps a sperm whale carry more oxygen for a long dive?

   • It has a larger blood volume and more red blood cells.
   • It has a smaller blood volume but larger lungs.
   • It has more white blood cells instead of red blood cells.
2. 2

   Besides its blood, where does a sperm whale store oxygen for a dive?

   • In its muscles
   • In its stomach
   • In its bones
3. 3

   During a deep dive, how does a sperm whale save oxygen?

   • It narrows blood flow to mainly the heart and brain.
   • It sends blood mainly to its tail and fins.
   • It sends blood equally to every body part.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.