This amazing shot of a Great White Shark was taken from a shark cage in Mossel Bay, South Africa by American volunteer, Amanda Brewer, Eco-tourism in shark cages is promoted in Southern Africa, although the great whites are found in all the major oceans of the world. When I was a kid, we used to think they preferred warm water to cold water, but that isn't true. They grow to between 21 feet and 26 feet and live to about 70 years. They can swim at about 35 mph.
Eco tourism: http://goo.gl/UWpGAk