You need to raise it to level 18.
To evolve Marril you have to get it to level 18.
evolve maril
If any pokemon is caught at the level it would normally evolve you will need to train it one level more to evolve it. A Maril evolves at level 18 so you just need to train it one more level to evolve it.
Azumarill
It evolves in Level 18. Easy and Nice. Hope I helped :)
Once
route 345
You can find them in the safari zone.
yes
marill evolves into aruzill, and by the way i am ayaneel sinha babu from Bengal
azumaril is the evolved form of maril so it cant evolve to a previous form
its one of these. whichever fits the description. Oddish, jigglypuff, pichu, growlithe, maril (or one of its evolve forms i don't remember) and yea... think that's it.