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218
     How long can



     animals hold their




     breath in water?




                                  Many air-breathing animals
      DEEP BREATH
                                  can hold their breath for hours
                                  underwater: the loggerhead
                                  turtle manages 7 hours

                                  (420 minutes). Some animals
                                  dive to find food, while others

      In the extreme sport of free   stay underwater to sleep.
      diving, divers use no breathing
      equipment but hold their breath
      as they sink deep underwater.
                                                    Scuba divers can reach depths of
                                                    32 ft (10 m) for an hour if they have
     An average human                               an adequate oxygen supply in the tank.
     can hold her breath for
     30 seconds to 2 minutes;
     but the world record is                                        SCUBA
     22 minutes. Do not try                                         DIVER
     this at home!           ORCA                EMPEROR
                                                 PENGUIN
       HUMAN







          1                    20                 27                  60
        minute               minutes            minutes             minutes





   US_218-219_309600_Animals_Underwater.indd   218                        19/12/17   3:48 pm
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