Azumarill can make balloons out of air. It makes these air balloons if it spots a drowning Pokémon. The air balloons enable the Pokémon in trouble to breathe. The bubble-like pattern on its stomach helps it camouflage itself when it’s in the water. Its long ears are superb sensors. It can distinguish the movements of living things on riverbeds.
Pokédex entry #184
Azumarill is a type fairy and water Pokémon that evolves from azurill and marill.
Azumarill in Pokémon GO
It's possible to hatch Azumarill from an egg?
No, Azumarill can't be hatched.
Which are Azumarill’s strengths and weaknesses?
Azumarill is a fairy and water type Pokémon. fairy type pokémons are strong against fighting, bug, shadow pokémons but weak against poison, steel pokémons. They are not affected by dragon type pokémons. water type pokémons are strong against fire, ground, rock pokémons but weak against water, grass, dragon, electric pokémons.