Page 43 - World of Animals - Book of Sharks & Ocean Predators
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Great white sharks
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         The importance of hierarchy


          Not just colossal hunting machines, great whites have intricate social lives and family bonds
          Marine biologists are only scratching the   which in turn helps to avoid confl ict. Despite   organs in its snout, a great white can sense
          surface when it comes to understanding how   having a reputation for being stone-cold   tiny amounts of blood in the water up to fi ve


          great whites tick. As solitary fish, there’s some   killers, they aren’t keen to fight one another.   kilometres (three miles) away. They have also
          social hierarchy when individuals meet. In areas   In terms of hierarchy, the larger the shark, the   been witnessed raising their heads several feet
          with regular populations, large groups gather   higher its rank; similarly, residents come before   out of the water, and some think that this is to
          at certain times of year. These gatherings aren’t   newcomers and females before males. When   get a sniff of scents in the air.
          fully understood, but coincide with the boom   many sharks gather, competition for prey can   The sharks must keep swimming to stay

          of seal populations. Around this time, young   be fierce, so the sharks in some areas appear   alive, moving a flow of water over their gills

          great white sharks will hang back from large   to reduce conflict by respecting boundaries.   to keep oxygen pumping. It’s not known how

          kills to let the larger and older sharks take the   When it comes to hunting, ambush is the   they sleep, but some have been seen moving
          lion’s share. Physical gestures have shown that   method of choice. Hunting behaviour relies on   slowly, or even being stationary in gullies. By
          body language is also used to communicate.   a potent mix of precision and effi ciency and   facing their heads into the current, they’re able
            Most social interaction between great   the sharks use their developed brains and keen   to catch a breather between mouthfuls as the
          whites seems to be in order to establish rank,   senses to hone in on their prey. Using the scent   water passes into their gills.
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