Article Photos: Expo opens in South Korea with robots, ocean theme 3/4

  The Big O, a water screen that is a landmark of the Expo 2012, is seen during a media day of the expo, in Yeosu, South Korea, Wednesday, May 9, 2012. The expo will open for three months on May 12 under the theme of "The Living Ocean and Coast: Diversity of Resources and Sustainable Activities." (AP Photo/Yonhap) KOREA OUT