TO GO WITH STORY: SKorea-Expo2012-Yeosu-tourism,FOCUS by Jung Ha-Won This picture taken on April 20, 2012 shows fish robot developed by South Korea's Daewoo Shipbuilding and Marine Engineering as it swims in a pool of the robot pavilion of the 2012 Expo in South Korea's southwestern port of Yeosu, where 105 countries will showcase exhibitions under the theme of "The Living Ocean and Coast" from May to August 2012. Yeosu, once a cement port terminal on South Korea's south coast, has undergone a 10 billion USD transformation as it prepares to host a major international expo. AFP PHOTO / KIM JAE-HWAN