BLUE WHALES

1
BLUE WHALES

• Some fantastic facts about the worlds largest
  creatures.
• Students of the
  10th form
• Teacher
  Levkovich E.V. Petropavlovsk-Kamchatsky

2

• The blue whale is the largest mammal in the world
  and the largest animal ever known to have lived
  on our planet.

3

• Its six times longer than a giraffe.

4

• Its heart is as large as a car.

5

• Its tongue along can weigh as much as an
  elephant.

6

• Female blue whales are larger than males. They
  can be more than 80 metres long and weigh 200
  tons.

7

• Baby whales weigh is about two tons when they are
  born and gain about 90 kilograms every day during
  the first year of their lives.

8

• The blue whale was named for its colour, a
  bluish-grey, that looks true blue under the water
  and greyish on the surface.

9

• Blue whales live in all the worlds oceans. They
  often spend summers in polar waters and migrate
  towards the Equator when winter arrives. They
  often swim in small groups or alone.

10

• Blue whales are able to breathe air, but they are
  very comfortable in the ocean water.

11

• Blue whales prefer to swim slowly, but they can
  reach speeds of over 30 kilometres an hour.

12

• These giant creatures feed on tiny shrimplike
  animals called krill. An adult blue whale can eat
  4 tons of krill a day.

13

• Blue whales are among the worlds longest-lived
  animals. They can live to be about 110 years old.

14

• Blue whales are among the loudest animals on the
  planet. Their calls are so loud that they can
  hear each other up to 1600 kilometres away.
  However, some of their loud sounds are so low in
  frequency that people cannot hear them without
  special equipment. Scientists think that blue
  whales use these calls to communicate with each
  other.

15

• Only a few thousand blue whales are believed to
  swim the worlds oceans. They are one of the most
  endangered species in the world. They were hunted
  for many years for their oil, and they were
  almost hunted to extinction.

16

• In 1929 and 1930, for example, whalers managed to
  kill 30000 Antarctic blue whales.

17

• The mammals became a protected species in the
  1960s. Today, they seem to be growing in numbers.
  But although its good news, scientists know,
  theyre not out of danger yet.

18
(No Transcript)