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Ultra Deep Sea, referred to as Ultra Space in Pokémon Sun and Moon, is one of the several worlds of Ultra Space accessible though Rarity 1 White Warp Holes after defeating Necrozma, it's the home of Nihilego. In Pokémon Sun and Moon, after Nebby evolves into Solgaleo or Lunala, it takes the player and Lillie to Ultra Deep Sea, where Lusamine is faced for the last time.


Ultra Deep Sea is a dark cave with a dark stone path that ends in a dead end with a small rock where the player can sit. There are many sparkling crystals surrounding the area, several Nihilego can be seen floating around.


Pokémon Sun and Moon

The player battles Lusamine after her fusion with a Nihilego. After the player defeats Lusamine, it's impossible to return to Ultra Deep Sea.

All her Pokémon have auras that boost their following stats by one stage:

  • Special Defense (Clefable)
  • Special Attack (Lilligant)
  • Speed (Mismagius)
  • Attack (Milotic)
  • Defense (Bewear)
Clefable XY.gif
 Type Fairy.gif 
Lilligant XY.gif
 Type Grass.gif 
Mismagius XY.gif
 Type Ghost.gif 
Milotic XY.gif
 Type Water.gif 
Bewear SM.gif
 Type Normal.gif Type Fighting.gif 
 Type .gif 
Lv. 50 Lv. 50 Lv. 50 Lv. 50 Lv. 50 Lv. ? -
Ability: Magic Guard Ability: Own Tempo Ability: Levitate Ability: Marvel Scale Ability: Fluffy Ability: Unknown
Item: None Item: None Item: None Item: None Item: None Item: ?
Moonblast Petal Dance Shadow Ball Hydro Pump Baby-Doll Eyes -
Cosmic Power Teeter Dance Mystical Fire Safeguard Hammer Arm -
Metronome Stun Spore Power Gem Flail Take Down -
Moonlight Leech Seed Pain Split Recover Pain Split -


Pokémon Ultra Sun and Ultra Moon

A Nihilego is found during each visit to Ultra Deep Sea. It has an aura what boosts its Special Defense by two stages.

793 Sprite.gif

Beast Boost
Held item:


  • In Pokémon Sun and Moon, the Rotom Pokédex doesn't work in the Ultra Deep Sea. In Pokémon Ultra Sun and Ultra Moon, Rotom always displays the Altar of the Sunne/Altar of the Moone minimap.
  • All of Lusamine's Pokémon (except Bewear) have an angry expression instead of the normal expression.
  • If a Pikachu, Cubone or Exeggcute evolves in Ultra Deep Sea in Pokémon Sun and Moon, it will still evolve into their Alola Form.