Doraemon: Nobita no Ningyo Daikaisen(2305)

Other Title(s)Doraemon: Nobita`s Great Mermaid Naval Battle
Genre(s)Comedy, Kids
SynopsisWhen Nobita feels like diving in his hometown, Doraemon uses a Underwater Pump Simulator to pump all the water out of Tokyo, causing the entire city to go underwater. That night, Doraemon and Nobita use a Diving Mask Simulator to dive underwater. Later on, lots of fish, and a shark attack Doraemon and Nobita. So, Doraemon puts a stop on the Underwater Pump Simulator, but there is a girl named Sophia, lying down on the bushes in his neighborhood.