Page 8 - World Explorer 6 Książka Ucznia

Animal talk
1b

Read and listen

1 1 Read and listen. How do dolphins
7
know who another dolphin is?

Can people speak to dolphins? Of course they can, but
they don t understand them!
This is what Jane Jeferson, a marine biologist, says about
dolphin communication. Just like dogs, cats and other
mammals, dolphins communicate by using sound, vision, touch
and taste. The only thing they can t do is smell. Each dolphin
has its own personal whistle. When the other dolphins hear the
whistle they know who the dolphin is.
Dolphins have also got their own language. They make diferent
sounds like whistles, squeaks and clicks. Jane thinks dolphins are
clever. She is doing an interesting experiment at the moment with
a mother dolphin and her two-year-old baby in an aquarium.
The mother and baby are in diferent tanks. They can t see each
other but they can hear each other with a special underwater
audio system. They use the system to talk to each other. It s like
a telephone!
Jane knows that dolphins have got a language, but she also
knows that people don t understand what dolphins say. Guess
Jane wants to decode the dolphin language so she listens What?
to them every day. She hopes to have a conversation Blue whales are the
with a dolphin one day.
loudest animals on Earth.
Their calls can be 188
decibels. People shout
at only 70 decibels.

2 Answer the questions. 3 Find the words in the text that have these
meanings.
1 What is the name of the sense dolphins
haven t got? 1 to do with the sea:
2 a high sound you can make by
2 What kinds of sounds do dolphins make? blowing air out through your lips:

3 What can the mother dolphin and her baby do? 3 aquarium:
4 physical contact:
4 Can people understand dolphin language? 5 a type of animal that drinks its
mother s milk when it is a baby:

5 What does Jane Jeferson hope to do one day? 6 discover the meaning of:

14