Japanese toy maker Takara Tomy's world's smallest humanoid robot “i-Sobot” is displayed during the Toy Forum 2007 on January 23, 2007 in Tokyo, Japan. The 165mm height robot is able to walk, play the drums and keep its balance. (Photo by Koichi Kamoshida/Getty Images)

Visitors enjoy watching the Blue Nemophila flowers bloom during the Golden Week holidays, at Hitachinaka Kaihin Park on May 02, 2010 in Hitachinaka, Ibaraki, Japan. Millions of nemophilas blossom across the “Miharashi No Oka” hill at Hitachi Seaside Park for the annual “Nemophila Harmony” flower festival. (Photo by Koichi Kamoshida/Getty Images)

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)

Japan Self-Defense Force members pay their respect to unidentified earthquake victims in vehicles during a mess funeral on April 8, 2011 in Yamamoto, Miyagi Prefecture, Japan. The 9.0 magnitude strong earthquake struck offshore on March 11 at 2:46pm local time, triggering a tsunami wave of up to ten metres which engulfed large parts of north-eastern Japan, and also damaging the Fukushima nuclear plant and threatening a nuclear catastrophe. The death toll continues to rise with numbers of dead and missing exceeding 20,000 in a tragedy not seen since World War II in Japan. (Photo by Athit Perawongmetha/Getty Images)

A craftsman makes imitation bread samples at The Sample Factory on February 25, 2008 in Gujo, Gifu, Japan. Gujo City has more than a 50 percent share of the imitation vinyl chloride samples industry. Replica foods are used in most restaurant window displays in Japan, and are popular as souvenirs for tourists. (Photo by Koichi Kamoshida/Getty Images)

Models dressed as bandaged nurses take part in a promotional event for the film “Silent Hill” on June 22, 2006 in Tokyo, Japan. (Photo by Junko Kimura/Getty Images)

A Japanese white-eye is seen on a branch of cherry blossoms at Kyoto Imperial Palace on March 26, 2010 in Kyoto, Japan. (Photo by Akihiro I/Getty Images)

Families and relatives of the dead cry as they identify their family members at a temporary burial ground March 25, 2011 in Higashi Matsushima , Japan. (Photo by Paula Bronstein /Getty Images)