According to this story, these dolphins were shipped from Taiji, Japan, which is about 400 miles southwest of the Fukushima nuclear power plant. It's also the site of a film about the dolphin industry called "The Cove," which won an Oscar for Best Documentary Feature in 2009.
Xinhua / Gamma-Rapho via Getty Images
Staff members of Hunan Entry-Exit Inspection and Quarantine Bureau sterilize the box containing a dolphin at Huanghua Airport on March 30, 2011 in Changsha, capital of central China's Hunan Province. Four dolphins from Japan, which have received radiation checks, will be on show to tourists at the Changsha Sea World after a month long quarantine.