Answer:
Scientists think that most of the shark attacks on humans are due to mistaken identity.
Observations proved that surfers on surfboards resemble the image of a sea lion a sea turtle or a seal when seen from the bottom of the ocean, making sharks curious to test the prey.
Other times, sharks attack humans as result of provocations by human activity like fishing, water activities or splashing.
Other occasions, colors used by people or shiny jewelry can attract the attention of sharks.
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