A sea lion pounds on a drum to mark the 30-day countdown to the opening ceremony of Shanghai World Expo at Shanghai Changfeng Ocean World, on March 30, 2010. Ocean World will put on stage live animal performances in April. April 1 marks the 30-day countdown to the opening ceremony of Shanghai World Expo. [Photo/Xinhua]
New song marks 30-day countdown
Little Mermaid moving to Shanghai for 2010 World Expo
