多啦A梦 The Movie: Nobita's Great Battle of the Mermaid King (映画ドラえもん のび太の人魚大海戦, Eiga 多啦A梦 Nobita no Ningyo Daikaisen?), also known as 多啦A梦 THE LEGEND 2010, is a 2010 Japanese animated film that was released on March 6, 2010. This movie is part of the celebration for the franchise's 40th anniversary and it's 30th movie anniversary (映画ドラえもん30周年?).[1][2]

When Nobita feels like diving in his hometown, 多啦A梦 uses Underwater 泵 Simulator (架空水面シミュレーター・ポンプ?) to 泵 all the water to fill up water. That night, 多啦A梦 and Nobita use a Diving Mask Simulator to dive underwater. Later on, lots of fish, and a 鲨鱼 attack 多啦A梦 and his friends. So, 多啦A梦 puts a stop on the Underwater 泵 Simulator, but there is a girl named Sophia, lay down on the bushes in his town.