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.
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, alternating back and forth at regular intervals.
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.
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.
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.
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.
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 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.
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.
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.
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.
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.
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, PrimalGroudon 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.
In The Beginning of the End with Kyogre & Groudon II, Kyogre and Groudon were awakened by Team Aqua and Team Magma, respectively, with Maxie taking control of them both 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 gave the Blue Orb to Tabitha so that the Magma Admin could control Kyogre on his behalf. While doing what he had been ordered to do, Tabitha was ambushed by Aqua AdminAmber, 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 the Dive technique of 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, following the end of the weather crisis, 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 is erroneously called the "Cave of Origin" in the Chuang Yi translations of Pokémon Adventures volumes 19, 20, and 21.
The protruding island
The caverns
