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the shark in sensing minute electrical currents created by movement by other creatures in the water. Great white sharks can also sense a droplet of blood even when diluted in 25 gallons of water. They can locate a bleeding animal from three miles away.

Three methods of attack are utilized by great white sharks. The preferred way is to approach the prey from below until about one meter away and then increase speed to up to fifteen miles per hour while opening its mouth. Sometimes this lunge causes the shark to breach the water surface. The shark takes a bite to determine the food value of the prey. The shark will then either release the prey or will complete the bite and allow the prey to die from loss of blood. In the second method, the shark swims toward its prey with its dorsal fins above the water and quickens its speed when within striking distance. A much less common approach is when the great white shark comes up to its prey by swimming on its back.

In any event, once the prey is near death, the great white shark rips chunks from it with the first two rows of its three thousand sharp, serrated teeth. It then swallows the morsels whole. If the prey is an adequate meal, the great white shark may not have to kill again for up to two months.

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Sources:
http://www.enc hantedlearning.com/subjects/sh arks/species/Greatwhite.shtml
h ttp://greatwhiteshark.netfirms .com/gwdiet.htm
http://www.ocea nlight.com/html/great_white_sh ark.html several excellent photos of great white sharks
http://animals.nationalg eographic.com/animals/fish/gre at-white-shark.html
http://anim als.howstuffworks.com/fish/gre at-white2.htm

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