After creating the animatic, I think it looks a bit flat in a way to present the inner world/ imaging world of the story in visually. Therefore I have looked at different researches to get some inspiration. Alan suggested me to watch "The Imaginarium of Doctor Parnassus" to get some idea.
For the Hong Kong shell, because Hong Kong is always busy to me so I am thinking to create a busy metropolis under the sea which relate to Hermit Crabs and sea animal.
And for the England shell, because UK always raining and I think it could be something happen in that world and the England building at the background and the water push me to land and find the three shell.