Page 69 - World of Animals - Issue #41
P. 69

Blowhole
                                                                        These are the whale’s nostrils.
                 Dorsal fin                                              Baleen whales have two blowholes

                                                                        side-by-side. They use these holes to
                                                                        draw air into the lungs. A muscular
                                                                        flap covers the holes underwater.





















                                                   Peduncle
                                          The muscular tail powers the flukes,

                                               allowing for strong dives                            Tubercles
                                                                                                    The small ‘bumps’ on the whale’s

                                                                                      Fluke         fins and mouth each contain a
                                                                                                    sensory hair. They also aid in
                                                          Blubber                                   making the whale extra streamlined
                                                                                                    as it cuts through the water.
                                        Tough skin       A thick layer
                                                         of insulating
                                                        blubber keeps                                           Tail fluke

                                                       the whale warm                                           As individual as human
                                                                                                                faces, tail flukes help to

                                                                  Flippers                                      identify whales. Flukes
                                                                 These are the                                  power swimming and dives
                                                                 largest of any                                 and also help with whale
                                                                 whales – up to                                 communication, such as
                                                                                                                slapping on the sea surface.
                                                                one-third of the
                                                                  body length
                                                                                                          “Tubercles aid
                                                                                                          in making the

                                                                                                      humpback extra
                                                                                                             streamlined”
                                     Ear
                                  Humpbacks
                                  communicate                                           Closest family
                                   with sound,
                       Eyes       and have very                                         Closely related to the humpback whale are…
                     A whale’s    sensitive ears        Skeleton
                    eyeballs are
                   flattened to let

                    in more light


                                                                                        Blue whale    Minke whale   Fin whale
                                                                                        The largest animal on   The minke whale is   Recognised by their
                                                                                        Earth, the blue whale   the most abundant of   characteristic two-
                                                                                        measures up to 30m   the rorqual whales,   toned mouth (the

                                                                                        (98.4ƒ) long, and their   found throughout the   lower jaw is bright
                                                                                        tongues alone can   world’s oceans. They   white and the upper
                                                                                        weigh as much as   too are filter feeders   jaw is grey), the huge

                                                                                        an elephant! Like the   and are much smaller   fin whale species can

              Sexual maturity   Migration      Adult female      Adult male             humpback, this baleen  than humpbacked   grow to 24m (78.7ƒ)

              5 years          5+ years        6-40 years        15+ years              whale also feeds   whales. Their stocky   long. Their distinctive
              Humpback whales have   At the right time, whales   Females get pregnant every   Males can mate from five   on krill, consuming   bodies measure   sharp dorsal fin has


              grown up enough to   migrate from the feeding   2-3 years, and give birth to   years, but aren’t large enough   a staggering three   around 8-9m (26.2-  earned them the

              become sexually mature.  to the mating grounds.  one baby at a time.   to compete for females until 15.  tonnes per day.  29.5ƒ) long.  nickname ‘razorback’.
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       064-071_WOA041 AA Humpback whales.indd   69                                                                           30/11/2016   17:57
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