Scientist think that most of the shark attacks on humans are
due to mistaken identity.
Sometimes, as the attacks on surfers, human figure resembles
the image of a sea lion or a seal from the bottom of the ocean,
making them curious to test the prey.
Some other times, sharks attack humans because they are
provoked by human activity like water agitation or
splashing.
In occasions, colors used by humans or shiny jewelry can
attract sharks.