It flies forever through the ozone layer, consuming meteoroids for sustenance. The many meteoroids in its body provide the energy it needs to Mega Evolve. It flies in the ozone layer, way up high in the sky. Until recently, no one had ever seen it. It lives in the ozone layer far above the clouds and cannot be seen from the ground.
Pokédex entry #384
Rayquaza is a type dragon and flying Pokémon that doesn't evolve
Rayquaza in Pokémon GO
It's possible to hatch Rayquaza from an egg?
No, Rayquaza can't be hatched.
Which are Rayquaza’s strengths and weaknesses?
Rayquaza is a dragon and flying type Pokémon. dragon type pokémons but weak against ice, fairy pokémons. flying type pokémons are strong against grass, fighting, bug pokémons but weak against electric, rock pokémons.