Manaphy and Phione are only obtainable in very specific ways in Pokémon Brilliant Diamond and Brilliant Pearl. We will explore how to add them to your collection.
The sea Pokémon Manaphy is not found natively in the wild. The only way to get this Pokémon is through the Manaphy Egg Internet Distribution Event. Gain access to mystery gifts from the third floor of the Jubilife TV building in Jubilife City.
Manaphy needs about 2500 steps to hatch its egg. We recommend getting on your bike, shifting into fourth gear and cycling up and down Jubilife City until it hatches. You will get a level 1 Manaphy with Tail Glow and Watergun. It can have any nature and is a type of pure water with the Hydration ability, which heals status effects during rain.
Phione does not appear naturally in nature and can only be obtained by pairing Manaphy with a Ditto. Ditto can be found on Route 18 with the PokéRadar and via the Grand Underground with the National Dex. The Pokémon Sea Drifter cannot evolve into Manaphy other than its unique capture method.
Both of these Pokémon are perfect for play and rain teams to take advantage of their hydration capacity, incredible base stats, and a decent move pool.