 FAKE: When the sea monster attacks, the crew gathers in the library  for a conference with Nemo. The ship is listing heavily, so much so  that the actors have to hang on to things as they struggle across  the room to reach Nemo. However, the water in the librarys aquarium  is tilted as well (revealing that the set is actually perfectly  level, but the camera has been tilted to imply the ships list).