The great white shark is found in almost all coastal and offshore waters with a water temperature between 12 and 30 degrees C.The average length of a great white shark is 4-4.8 meters with a weight of 1500 to 2450 lbs. Great white sharks, like all other sharks, have an extra sense given by the Ampullae of Lorenzini, which enables them to detect the electromagnetic field emitted by the movement of living animals. Every time a living creature moves it generates an electrical field and great whites are so sensitive they can detect half a billionth of a volt.To more successfully hunt fast moving and agile prey such as sea lions, the poikilothermic great white shark has developed adaptations that allow it to maintain a body temperature warmer than the surrounding water. One of these adaptations is a "rete mirabile". Great white sharks primarily eat fish, smaller sharks, turtles, dolphins, whale carcasses and pinnipeds such as seals and sea lions. Great whites have also been known to eat objects that can't be digested. In great white sharks above 3.41 meters (11 ft, 2 in) a diet consisting of a higher proportion of mammals has been observed.
Links:
http://en.wikipedia.org/wiki/Great_white_shark
http://oceanlink.island.net/oinfo/biodiversity/Great%20White%20Shark/shark.html
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