Visitors watch a tuna fish swimming in the large tank at the Tokyo Sea Life Park in Tokyo on March 25, 2015. The park on March 24 found the second last tuna fish floating dead in its vast doughnut-shaped enclosure that was once home to nearly 160 fish and among the venue's most popular attractions, said a spokesman for Tokyo Sea Life Park. (Photo by Toshifumi Kitamura/AFP Photo)
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