Author: Steve Jacobs
Source: Brisbane Times 
September 4, 2012
Sharks are very misunderstood animals and receive a largely undeserved reputation as vicious animals, although they have a unique "sixth sense" that allows them to locate their true, much smaller, prey.
These are some of the findings from research conducted by the Sydney Aquarium into shark behaviour.
There are more than 350 species of shark, but only four or five are considered to be dangerous to humans, the aquarium says.
For most sharks something as big as a human would not be considered as prey as we are too large, it says.
Instead they may think of us as a threat and prefer to stay as far away as possible.
Attacks on humans in the wild are not as common as the media would indicate, and deaths are even rarer, the aquarium says.
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