Ultra Deep Sea

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Ultra Deep Sea
Ultra Space
Ultra Deep Sea
"Wild Missingno. appeared!"
Ultra Deep Sea SM.png
Map description: {{{mapdesc}}}
Location: Ultra Space
Region: Unknown
Generations: VII

Location of Ultra Deep Sea in Unknown.
Pokémon world locations

Ultra Deep Sea (Japanese: ウルトラディープシー Ultra Deep Sea), known as Ultra Space (Japanese: ウルトラスペース Ultra Space) in Pokémon Sun and Moon, is the home of Nihilego.

In Pokémon Sun and Moon, it is the place where Lusamine is confronted for the final time. The player and Lillie reach it through a portal Nebby, now a SolgaleoS/LunalaM, creates after it evolves at the Altar of the SunneS/Altar of the MooneM. The player can return to their world to prepare by talking to SolgaleoS/LunalaM.


Ultra Deep Sea is a dark world with many caves that include several colorful rocks in the shape of flora on the walls that resemble diamonds. The area that the player arrives in containes a small pathway that the player can navigate through. Nigilego can be actively seen traveling through the area. There is also a small rocky platform in the middle of the area that the player can sit on to attract the local Nihilego.


Pokémon Sun and Moon

Spoiler warning: this article may contain major plot or ending details.

The player and Lillie first arrive here to retrieve Guzma and Lusamine and save the Aether Foundation president from herself. Guzma stops them as they proceed forward, warning them of the dangers ahead. When he arrived in Ultra Space, he had tried to capture one of the Ultra Beasts, but it possessed him. Fully aware he was being controlled by something else, Guzma felt fear for the first time in his life. He then tells Lillie that Lusamine is too far gone, but Lillie is not deterred.

Further inside, five of the same Ultra Beasts appear in front of Lillie, before dispersing and revealing Lusamine. Lusamine reveals the true name of UB-01, Nihilego, and chastises her daughter for intruding on her paradise. Lillie tries to reason with her but is quickly shut down, told to leave, and disowned by Lusamine. Lillie finally stands up to her mother, saying that children are not just things that belong to parents, and that Pokémon aren't just things that belong to Trainers. Lusamine blames the player for Lillie's defiance, and releases a Nihilego from a Beast Ball, merging with it before battling the player with the rest of her Pokémon.

After the player defeats Lusamine, Lillie calls SolgaleoS/LunalaM to help as the merged Lusamine/Nihilego prepares to attack her. The Legendary Pokémon roars, forcing Nihilego and Lusamine apart and sending the Ultra Beast back to its Ball. Exhausted, Lusamine falls to the floor, and Lillie runs to her mother. With the last of her strength, Lusamine asks her daughter when she became so beautiful before losing consciousness. Suddenly, the area grows unstable and Nihilego start surrounding the player, Lillie, Guzma, and Lusamine. Acting fast, SolgaleoS/LunalaM teleports the group out of Ultra Space before the Nihilego swarms can catch up to them.

It is impossible to return to Ultra Space after defeating Lusamine.

201 Spoilers end here. 201

Pokémon Ultra Sun and Ultra Moon

Ultra Deep Sea can be accessed through Rarity 1 warp holes in Ultra Warp Ride, within a couple of thousand light-years of Alola.

Special encounters

Pokémon Ultra Sun and Ultra Moon

Nihilego can be encountered and caught here, with the first being summoned by sitting in the spot Lusamine was seated in Sun and Moon. One Nihilego will spawn per visit. Nihilego will appear as ??? and will not be registered as seen in the Pokédex until caught.

Aura: +2 Special Defense
Rock Poison
Beast Boost
Held item:
None.png None None.png
??? Lv.60
Power Gem
Rock Special
Acid Spray
Poison Special
Stealth Rock
Rock Status
Mirror Coat
Psychic Special


Pokémon Sun and Moon

Each of Lusamine's Pokémon has an aura that boosts one of its stats, similar to the aura seen on the Totem Pokémon. Her Pokémon all have a perpetual angry expression, the same as when a Pokémon uses a Z-Move.

In the anime

Ultra Deep Sea in the anime

Ultra Deep Sea first appeared in Rescuing the Unwilling! and 10,000,000 Reasons to Fight!, where Ash and his classmates traveled there with Nebby in order to save Lusamine, who had been kidnapped and taken there by a Nihilego. Upon arrival, the group saw multiple Nihilego floating around, and soon discovered the one that had kidnapped Lusamine. Unfortunately, the Ultra Beast had fused with Lusamine and was affecting her mental state, causing her to fall into childish tantrums and be unwilling to leave, sending out her Pokémon to battle the group. The group chose to split up to battle each Pokémon, with Kiawe battling Lusamine's Salazzle; Lana, Mallow, Sophocles facing Milotic, Lilligant, and Mismagius; Gladion taking on Absol; and Lillie facing Clefable. Like Lusamine herself, her Pokémon were also under Nihilego's influence, causing them to rise back up even when it seemed like they were finally beaten. Lillie managed to use her Poké Doll to reignite Clefable's memories of their past together, allowing her to return Clefable back to normal.

While his friends stayed behind, Ash pursued Lusamine herself. Eventually, Lillie and Gladion joined him, and Lillie gave her mother a speech which seemed to start breaking her out of Nihilego's influence. Unfortunately, the Parasite Pokémon then took complete control of her, not wanting to let go of its host. As Gladion had already used Continental Crush earlier during his battle with Absol and thus exhausted his chance to use a Z-Move, he left the battle against the Ultra Beast to Ash. Unexpectedly, Ash's Electrium Z suddenly transformed into Pikashunium Z, allowing him and Pikachu to use a new Z-Move, which Ash dubbed 10,000,000 Volt Thunderbolt. This massive attack was powerful enough to defeat the Ultra Beast, causing it and Lusamine to be separated and the rest of Lusamine's Pokémon to return to normal as well. Afterwards, everybody rode Nebby back to their own world.

In The Homecoming Crown!, it was revealed that Mohn had wound up at the Ultra Deep Sea after disappearing into an Ultra Wormhole years earlier. He had been rescued by a Shiny Nihilego, who took him back to his own world through another wormhole.

In the manga

Ultra Deep Sea in Pokémon Adventures

Pokémon Adventures

Sun, Moon, Ultra Sun & Ultra Moon arc

Ultra Deep Sea first appeared in Adventure in the Dark Dimension. Sun and Moon arrived there after getting separated from Lunala in their attempt to rescue Solgaleo after it was possessed by Necrozma. They spent six months there, only surviving because their bodies stopped needing food and getting sick while they remained in the area. Sometime later, they spotted Lunala arriving at the area, only to find that it was being ridden by Dulse and Zossie of the Ultra Recon Squad. When Sun heard them talking about their work with the Aether Foundation, he assumed them to be enemies and tried to attack them, but Moon managed to calm the situation down. Eventually, Dulse agreed to stay behind so that Sun and Moon could ride Lunala with Zossie and travel to Ultra Megalopolis.

In the TCG

Sea of Nothingess
Cards listed with a blue background are only legal to use in the current Expanded format.
Cards listed with a green background are legal to use in both the current Standard and Expanded formats.
Card Type English
Rarity # Japanese
Rarity #
Sea of Nothingness St Crimson Invasion Uncommon 99/111 Ultradimensional Beasts U 048/050


Rotom unresponsive in Ultra Space in Pokémon Sun and Moon

In other languages

Ultra Deep SeaUSUM

Language Title
Chinese Cantonese 究極深海 Gaugihk Sāmhói
Mandarin 究極深海 / 究极深海 Jiūjí Shēnhǎi
France Flag.png French Ultra-Abysses
Germany Flag.png German Ultratiefsee
Italy Flag.png Italian Ultrabisso
South Korea Flag.png Korean 울트라딥시 Ultra Deep Sea
Spain Flag.png Spanish Ultraabismo
Vietnam Flag.png Vietnamese Biển sâu Ultra

Ultra SpaceSM

Language Title
Chinese Cantonese 究極空間 Gaugihk Hūnggāan
Mandarin 究極空間 / 究极空间 Jiūjí Kōngjiān
France Flag.png French Ultra-Dimension
Germany Flag.png German Ultradimension
Italy Flag.png Italian Ultramondo
South Korea Flag.png Korean 울트라스페이스 Ultra Space
Russia Flag.png Russian Ультраизмерение Ul'traizmereniye
Spain Flag.png Spanish Ultraespacio
Vietnam Flag.png Vietnamese Chiều không gian Ultra

Melemele Trial Completion.png Akala Trial Completion.png Ula'ula Trial Completion.png Poni Trial Completion.png
Melemele IslandAkala IslandUla'ula IslandPoni IslandAether Paradise
Iki TownHau'oli CityHeahea CityPaniola TownKonikoni CityMalie CityTapu VillagePo Town
Seafolk VillagePokémon League
Mahalo TrailTrainers' SchoolHau'oli CemeteryBerry fieldsVerdant CavernMelemele MeadowSeaward CaveKala'e Bay
Ten Carat HillPaniola RanchBrooklet HillMelemele SeaDiglett's TunnelRoyal AvenueBattle Royal DomeWela Volcano Park
Lush JungleMemorial HillAkala OutskirtsRuins of LifeHano Grand ResortHano BeachMalie GardenMount Hokulani
Hokulani ObservatoryBlush MountainUla'ula BeachAether HouseThrifty Megamart (Abandoned Site)Haina Desert
Ruins of AbundanceUla'ula MeadowLake of the MooneLake of the SunneShady HousePoni WildsAncient Poni Path
Poni Breaker CoastRuins of HopeExeggutor IslandVast Poni CanyonAltar of the SunneAltar of the MooneMount Lanakila
Ruins of ConflictPoni GrovePoni PlainsPoni MeadowResolution CavePoni CoastPoni GauntletBattle Tree
Festival PlazaPoké PelagoBig Wave BeachSandy CaveHeahea BeachPikachu ValleyDividing Peak Tunnel
Kantonian GymPoni BeachPlains GrottoTeam Rocket's Castle
Ultra Space
Ultra Deep SeaUltra MegalopolisMegalo TowerUltra JungleUltra DesertUltra PlantUltra ForestUltra CraterUltra Ruin
Ultra Space Wilds

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