at lvl 18
Marril evolves at 23, 18 or 24.
To evolve Marril you have to get it to level 18.
It evolves to Azumarill at level 18. You just have to level it up to evolve it.
look up marril in the pokedex then press A. the pokedex could locate marril . if that doesnt work then try the safari zone
Azurill
breed marril/azumarril with the sea incense attached hope this helped!
I think that u can find it in the dark cave on route 45. cuz i have caught it there.
The last pokemon that you show to bill grandfather in marril.
You can catch a wild marill in the safari zone.
you have to get a marill and a ditto together in the day care and soon you will find and egg there or you can breed a boy and girl marril or azumarril
sorry, the green marril is a shiny pokemon, so it depends on luck finding one. (exactly the place where you can find normal blue marrils)
marril is found in great marsh and sometimes azumarril