A eight-metre-long Whale shark swims with other fish in a worlds' largest tank with its front panel size of 8.2 metre x 22.5 metre at the Okinawa Churaumi Aquarium on February 26, 2010 in Motobu, Okinawa, Japan. Japan's most popular aquarium attracts more than 2.5 million visitors per year. (Photo by Koichi Kamoshida/Getty Images)

Indian children work nearby to their parents at a construction project in front of the Jawaharlal Nehru Stadium on January 30, 2010 in New Delhi, India. The children accompany their parents to the work site, where if they are prepared to work, they will receive money for bread an milk and be provided with dinner by the contractor. The sheer scale of the project has drawn an enormous population of migrant workers from all over India.

A visiter is attracted by the chairs covered with solar panels at the factory of Yingli Green Energy Holding Company, also known as Yingli Solar, on June 20, 2011 in Baoding city of Hebei Province, China. According to a report by the International Energy Agency (IEA), China overtook America as the world' s largest energy consumer in 2010. New energy industries are becoming even more important than in the past. (Photo by Feng Li/Getty Images)

Racegoers make their way home after Ladies Day on the second day of the Grand National meeting at Aintree Racecourse on April 9, 2010 in Aintree, England. Friday is traditionally Ladies day at the three-day meeting of the world famous Grand National, where fashion is as important as the racing. (Photo by Christopher Furlong/Getty Images)

Two chimpanzees share a piece of watermelon at Taronga Zoo on December 23, 2010 in Sydney, Australia. (Photo by Rick Stevens/Taronga Zoo via Getty Images)

A seven week old Daschund cross puppy waits to be re-homed at the Cheshire Dogs Home on January 4, 2010 in Warrington, England. (Photo by Christopher Furlong/Getty Images)