matt_a
Sceptile Enthusiast
Marill's gen 3 Pokedex page doesn't list Route 112 as a catching location in Emerald. It's in the PokeEarth but I also confirmed it in my Emerald
https://www.serebii.net/pokedex-rs/183.shtml
https://www.serebii.net/pokearth/hoenn/3rd/route112.shtml
https://www.serebii.net/pokedex-rs/183.shtml
https://www.serebii.net/pokearth/hoenn/3rd/route112.shtml