A full grown great white shark can very easily reach lengths of over twenty feet long. It's not just length that makes these predators big either, they can also weigh 4900+lbs. You can find more information here: http://en.wikipedia.org/wiki/Great_white_shark
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how long is a great white shark
This infamous shark is renowned as the most voracious predator of the seas and has a man-eater reputation. The powerful, cartilaginous body (as opposed to the bone skeleton of other vertebrates) is streamlined for efficient movement...