Seafloor Cavern

The Seafloor Cavern (Japanese: 海底洞窟 Seabed Cavern) is a location in Hoenn, deep beneath the water of Route 128. After surfacing inside the cave, there is a maze of tunnels to the deepest part, where the super-ancient Pokémon resides.

Not to be confused with Seafloor Cave (Friend Area).
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Seafloor Cavern 海底洞窟
Seabed Cavern
"Wild Missingno. appeared!"
Map description: It is said that a Pokémon once dwelled here in the ancient mists of a time long past.
Location: Route 128
Region: Hoenn
Generations: III, VI

Location of Seafloor Cavern in Hoenn.
Pokémon world locations

In order to reach it, the player must use Surf and Dive. Additionally, in Pokémon Emerald, a Team Aqua Grunt will block access to the deeper rooms from the entrance until after Team Magma is defeated at the Mossdeep Space Center. Inside, Strength is required for navigation; there are also breakable rocks, which cause Rock Smash to be required for navigation in the Generation III games, but not the Generation VI games.

In Pokémon Ruby and Omega Ruby, the cavern is the home of Groudon, who slumbers at its deepest part; in Pokémon Sapphire, Emerald, and Alpha Sapphire, the cavern is the home of Kyogre, who slumbers at its deepest part (in Pokémon Emerald, Groudon slumbers within the Magma Hideout, deep inside of the caverns of Mt. Chimney).

In Pokémon Ruby, Sapphire, and Emerald, the stolen Submarine Explorer 1 is parked at the bottom of the underwater area underneath the Seafloor Cavern. In Pokémon Omega Ruby and Alpha Sapphire, the stolen Submarine Explorer 1 is parked at the shore in the entrance chamber of the Seafloor Cavern.

In the deepest part, MaxieROR or ArchieSEAS will attempt to control the super-ancient Pokémon using the orb he stole from Mt. Pyre. However, the Pokémon does not respond well, and instead will escape, causing harsh sunlightR/extremely harsh sunlightOR or rainS/heavy rainAS throughout eastern Hoenn; in Emerald, both rain and harsh sunlight appear, and they change after the player takes enough steps (counting actions like using Fly).

Items
Item Location Games
Heart Scale In the southeast corner of the entrance (hidden)  OR  AS 
Escape Rope In the northern of the two southeast corners of Room 3 (requires Strength) (hidden)  OR  AS 
TM55 (Scald) In the center of Room 5, on an island among the currents (requires Strength)  OR  AS 
TM26 (Earthquake) Room 9, left of the stairwell to the deepest room (requires Strength)  OR  AS 
TM26 (Earthquake) At the deepest room, near the doorway (requires Strength)  R  S  E 

Rock Smash
Item Location Games
Big Pearl Randomly found by smashing breakable rocks  OR  AS 
Ether Randomly found by smashing breakable rocks  OR  AS 
Hard Stone Randomly found by smashing breakable rocks  OR  AS 
Heart Scale Randomly found by smashing breakable rocks  OR  AS 
Max Ether Randomly found by smashing breakable rocks  OR  AS 
Max Revive Randomly found by smashing breakable rocks  OR  AS 
Normal Gem Randomly found by smashing breakable rocks  OR  AS 
Pearl Randomly found by smashing breakable rocks  OR  AS 
Revive Randomly found by smashing breakable rocks  OR  AS 
Soft Sand Randomly found by smashing breakable rocks  OR  AS 
Star Piece Randomly found by smashing breakable rocks  OR  AS 

Pokémon

Generation III

No Pokémon can appear by walking at the entrance or GroudonR/KyogreSE room.

Pokémon Games Location Levels Rate
Zubat
 R S E
Cave
 28-35 90%
Golbat
 R S E
Cave
 33-36 10%
Surfing
Zubat
 R S E
Surfing
 5-35 35%
Golbat
 R S E
Surfing
 30-35 5%
Tentacool
 R S E
Surfing
 5-35 60%
Fishing
Tentacool
 R S E
Fishing
Old Rod
 5-10 30%
Magikarp
 R S E
Fishing
Old Rod
 5-10 70%
Tentacool
 R S E
Fishing
Good Rod
 10-30 20%
Magikarp
 R S E
Fishing
Good Rod
 10-30 60%
Wailmer
 R S E
Fishing
Good Rod
 10-30 20%
Wailmer
 R S E
Fishing
Super Rod
 20-45 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Entrance
Pokémon Games Location Levels Rate
Surfing
Golbat
 OR AS
Surfing
 25, 30, 35 55%
Tentacruel
 OR AS
Surfing
 30, 35 45%
Fishing
Tentacool
 OR AS
Fishing
Old Rod
 10 35%
Magikarp
 OR AS
Fishing
Old Rod
 5, 10 65%
Tentacool
 OR AS
Fishing
Good Rod
 30 35%
Magikarp
 OR AS
Fishing
Good Rod
 30 60%
Wailmer
 OR AS
Fishing
Good Rod
 30 5%
Wailmer
 OR AS
Fishing
Super Rod
 30, 35, 40 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Room 1, room 2, and room 4
Pokémon Games Location Levels Rate
Golbat
 OR AS
Cave
 33-36 100%
Horde Encounter
Zubat
 OR AS
Horde Encounter
 18 100%
Rock Smash
Graveler
 OR AS
Rock Smash
 33-36 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Room 5 and room 6
Pokémon Games Location Levels Rate
Golbat
 OR AS
Cave
 33-36 100%
Horde Encounter
Zubat
 OR AS
Horde Encounter
 18 100%
Surfing
Golbat
 OR AS
Surfing
 25, 30, 35 35%
Tentacruel
 OR AS
Surfing
 25, 30 65%
Fishing
Tentacool
 OR AS
Fishing
Old Rod
 5 35%
Magikarp
 OR AS
Fishing
Old Rod
 10 65%
Tentacool
 OR AS
Fishing
Good Rod
 25 35%
Magikarp
 OR AS
Fishing
Good Rod
 25 60%
Wailmer
 OR AS
Fishing
Good Rod
 25 5%
Wailmer
 OR AS
Fishing
Super Rod
 30, 35, 40 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Room 3, room 7, room 8, and room 9
Pokémon Games Location Levels Rate
Golbat
 OR AS
Cave
 33-36 100%
Horde Encounter
Zubat
 OR AS
Horde Encounter
 18 100%
A colored background means that the Pokémon can be found in this location in the specified game. A white background with a colored letter means that the Pokémon cannot be found here.


Trainers

Pokémon Ruby
Trainer Pokémon
Room 1
Team Magma Grunt
Reward: 740
Poochyena♂ Lv.37
No item
Numel♂ Lv.37
No item
Team Magma Grunt
Reward: 760
Numel♂ Lv.38
No item
Room 3
Team Magma Grunt
Reward: 720
Poochyena♂ Lv.36
No item
Zubat♂ Lv.36
No item
Numel♂ Lv.36
No item
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.






Pokémon Sapphire
Trainer Pokémon
Room 1
Team Aqua Grunt
Reward: 740
Poochyena♂ Lv.37
No item
Carvanha♂ Lv.37
No item
Team Aqua Grunt
Reward: 760
Carvanha♂ Lv.38
No item
Room 3
Team Aqua Grunt
Reward: 720
Poochyena♂ Lv.36
No item
Zubat♂ Lv.36
No item
Carvanha♂ Lv.36
No item
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.






Pokémon Emerald
Trainer Pokémon
Room 1
Team Aqua Grunt
Reward: 720
Poochyena♂ Lv.36
No item
Team Aqua Grunt
Reward: 720
Carvanha♂ Lv.36
No item
Room 3
Team Aqua Grunt
Reward: 720
Potential Double Battle with the following Grunt
Zubat♂ Lv.36
No item
Team Aqua Grunt
Reward: 720
Potential Double Battle with the previous Grunt
Carvanha♀ Lv.36
No item
Room 7
Team Aqua Grunt
Reward: 700
Potential Double Battle with Shelly
Mightyena♂ Lv.35
No item
Golbat♂ Lv.35
No item
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.






Pokémon Omega Ruby
Trainer Pokémon
Room 1
Team Magma Grunt
Reward: 1,560
Numel♂ Lv.39
No item
Mightyena♂ Lv.39
No item
Team Magma Grunt
Reward: 1,640
Golbat♂ Lv.41
No item
Room 2
Team Magma Grunt
Reward: 1,640
Numel♀ Lv.41
No item
Room 3
Team Magma Grunt
Reward: 1,640
Weezing♀ Lv.41
No item
Room 7
Team Magma Grunt
Reward: 1,600
Mightyena♂ Lv.38
No item
Weezing♂ Lv.40
No item
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.




Pokémon Alpha Sapphire
Trainer Pokémon
Room 1
Team Aqua Grunt
Reward: 1,560
Carvanha♂ Lv.39
No item
Mightyena♂ Lv.39
No item
Team Aqua Grunt
Reward: 1,640
Golbat♂ Lv.41
No item
Room 2
Team Aqua Grunt
Reward: 1,640
Carvanha♀ Lv.41
No item
Room 3
Team Aqua Grunt
Reward: 1,640
Muk♀ Lv.41
No item
Room 7
Team Aqua Grunt
Reward: 1,600
Mightyena♂ Lv.38
No item
Muk♂ Lv.40
No item
Trainers with a PokéNav by their names will be registered in the Trainer's Eyes or Match Call function after the first battle, and may have a rematch with the player with higher-level Pokémon.




Layout
Version Underwater Entrance Room 1 Room 2 Room 3 Room 4 Room 5 Room 6 Room 7 Room 8 Deepest room
Ruby
Sapphire
Emerald
 

In the anime
Seafloor Cavern in Pokémon Generations

Pokémon Generations

The Seafloor Cavern briefly appeared in a vision by Courtney in The Vision. Although the interior of the cavern wasn't shown, the top was depicted as a rocky island protruding from the water. At this rocky island, Primal Groudon appeared and attacked Team Magma.

It properly appeared in The Cavern, where it was shown that Team Aqua also visited it. Archie, Shelly, and three Team Aqua Grunts went deep inside the cave and found a room where Kyogre was resting. Archie woke it up with the Blue Orb, after which Kyogre transformed into Primal Kyogre and started to go on a rampage throughout the Hoenn region.

  • The protruding island
  • The caverns

In the manga
Seafloor Cavern in Pokémon Adventures

Ruby & Sapphire chapter

The Seafloor Cavern first appeared in The Beginning of the End with Kyogre & Groudon I, where Team Magma and Team Aqua arrived there together thanks to them forming a temporary alliance to combine the Submarine Explorer 1, which had been stolen by Team Magma, with its heart component, which had had been stolen by Team Aqua, allowing them to dive deep enough to reach the undersea cave.

In The Beginning of the End with Kyogre & Groudon II, Maxie awakened Kyogre and Groudon by using the Red and Blue Orbs, intending to give Groudon the advantage. However, in Very Vexing Volbeat, Maxie started to struggle, as controlling two Legendary Pokémon at the same time started to take too much of his mental capacity. As such, he had the Blue Orb be taken away by Tabitha so that he could focus on controlling Groudon. While doing what he had been ordered to do, Tabitha was ambushed by Amber, who used his Volbeat's Trick to steal the Blue Orb and deliver it to Archie. Archie then locked both Amber and Tabitha inside the Submarine Explorer 1 and sent it to dive on autopilot without its heart component in order to do away with the men inside.

In No Armaldo Is an Island, Ruby and Sapphire reached the Seafloor Cavern thanks to Sapphire's Relicanth, Relly. They started battling against Archie and Maxie, but were unable to retrieve the Orbs before the two villainous team leaders were overcome by their power and ended up fusing with them. Maxie and Archie then grabbed Ruby and Sapphire, and started to fly away, the Orbs' powers being called by Groudon and Kyogre.

In It All Ends Now V, Kyogre was revealed to have returned to slumber in the Seafloor Cavern, while Groudon had chosen to sleep inside Mt. Chimney instead.

The Seafloor Cavern was erroneously called the "Cave of Origin" in the Chuang Yi translations of Pokémon Adventures volumes 19, 20, and 21.

Trivia

In other languages
Language Title
Chinese Cantonese 海底洞窟 Hóidái Duhngfāt
Mandarin 海底洞窟 Hǎidǐ Dòngkū
French Caverne Fondmer
German Tiefseehöhle
Italian Antro Abissale
Korean 해저동굴 Haejeo Donggul
Brazilian Portuguese Caverna do Fundo do Mar (manga)
Caverna Seafloor (anime)
Spanish Caverna Abisal
Vietnamese Hang Đáy Biển




Hoenn
Settlements
Littleroot Town • Oldale Town • Petalburg City • Rustboro City • Dewford Town • Slateport City • Mauville City • Verdanturf Town
Fallarbor Town • Lavaridge Town • Fortree City • Lilycove City • Mossdeep City • Sootopolis City • Pacifidlog Town • Ever Grande City
Battle Frontier • Battle Resort
Routes
101 • 102 • 103 • 104 • 105 • 106 • 107 • 108 • 109 • 110 • 111 • 112 • 113 • 114 • 115 • 116 • 117 • 118
119 • 120 • 121 • 122 • 123 • 124 • 125 • 126 • 127 • 128 • 129 • 130 • 131 • 132 • 133 • 134 • Underwater
Landmarks
Petalburg Woods • Rusturf Tunnel • Island Cave • Granite Cave • Abandoned Ship • Sea Mauville • Oceanic Museum
Seaside Cycling Road • Trick House • Mauville Game Corner • New Mauville • Trainer Hill • Desert Ruins • Mirage Tower • Fiery Path
Jagged Pass • Mt. Chimney • Desert Underpass • Meteor Falls • Weather Institute • Scorched Slab • Ancient Tomb • Safari Zone • Mt. Pyre
Lilycove Museum • Shoal Cave • Team Aqua Hideout • Team Magma Hideout (Lilycove • Jagged Pass) • Mossdeep Space Center • Seafloor Cavern
Cave of Origin • Mirage Island • Sky Pillar • Victory Road • Sealed Chamber • Artisan Cave • Altering Cave • Southern Island • Marine Cave • Terra Cave
Contest Hall • Battle Maison • Battle Tower • Battle Tent • Secret Islet • Secret Meadow • Secret Shore
Mirage spots

Mirage Caves • Mirage Forests • Mirage Islands • Mirage Mountains
Crescent Isle • Fabled Cave • Gnarled Den • Nameless Cavern • Pathless Plain • Trackless Forest

Access to
Birth Island • Faraway Island • Navel Rock • Sky


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