Untitled Document
 Look
at the picture. The whale is spouting water from its back! It looks
really cool, doesn’t it? Here is a question. Why and how do they squirt
water like this?
A whale has one or two holes to breathe, which are called blowholes.
To our surprise, the holes are located far back on the top of its
head. Whales can only breathe through their blowholes.
 When they
are about to dive deep down into the water, they fill their lungs with air. When they
come back to the surface to breathe, they expel the air
with force. They blow the warm
and moist air that has formed in their lungs out
through their blowholes. When this air
comes out, it gets combined with cool air and that forms a huge stream of vapor. It makes
the whales look like they are squirting water!
Interestingly, every species of whales squirts
water differently. Therefore, we can tell different whales apart by
that! How about taking a closer look next time when whales are blowing
water? |
|
|
|
