Page 173 - (DK) Super Shark Encyclopedia: And Other Creatures of the Deep
P. 173

BRAINY



                                                                        COLOSSUS




                                                                          SPERM WHALE






                                                                       The sperm whale is the world’s largest predator. Its
                                                                       jaw is longer than a car and each tooth is bigger than
                                                                       an ice cream cone. Sperm whales dive very deep in the
                                                                       ocean to prey on giant squid. Like all hunters, a sperm
                                                                       whale needs to be clever to catch its prey. Not even the
                                                                       blue whale—the biggest animal of all—has a larger brain.





                                                                           AT A GLANCE

                                                                          •  SIZE  36–66 ft (11–20 m) long;   •  LOCATION  Worldwide, in deep
                                                                             mature males can be twice as    ocean waters, except those
                                                                             long as females             covered by ice
                                                                          •  HABITAT  Open sea        •  DIET  Mainly squid (including giant
                                                                                                         and colossal squid), but sometimes
                                                                                                            deep-sea octopuses and fish











                                                                           7 0             STATS AND FACTS
                                                                                           MAXIMUM WEIGHT
                                                                            YEARS                   tons   20     40     60

                                                                            LIFESPAN                tonnes   25        50       75
                                                                                                               63 tons (57 tonnes)

                                                                         Few air-breathing   AVERAGE BRAIN WEIGHT  17 lb/7.8 kg
                                                                         animals can hold                        (whale brain)
                                                                         their breath for as long    lb    5     10     15    20
                                                                         as a sperm whale.
                                                                         By diving deeper and       kg     2.5     5    7.5     10
                                                                         longer, sperm whales            3 lb/1.4 kg
                                                                         can find more prey.              (human brain)
                                   A HEAD FOR SOUND                                        DIVING DEPTH              7,380 ft/
                                                                                                                 2,250 m (max.)
                                   The massive head of a sperm                                      ft       3,000   6,000    9,000
                                   whale is packed with waxy oil,        MAX. DIVE DURATION
                                                                                                             1,000
                                   which carries sound really well.                                 m    1,300 ft/400 m   2,000  3,000
                                   This helps the sperm whale              9 0                           (usual)
                                   make clicking noises, which it
                                   uses for communication as well             MIN
                                   as for locating prey.
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