>>58246027There's a very light nature theme in Gen 3, with the weather playing a role due to the legendaries, Team Aqua and Magma wanting to create more sea or land, Professor Birch being a researcher in Pokemon habitats, they loosely continue this with the FRLG pokedex showing you the habitats Pokemon actually live in
Its not in your face stupid strongly, but nature does play a role during that generation
You could also see Steven and Wallace, the two champions of Hoenn being a representation of land and sea living in harmony with one another, as they're friends