Pokémon Ruby and Sapphire/Seafloor Cavern

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Seafloor Cavern is a subterranean cave deep beneath the waves of Route 128. The cavern is somewhat maze-like, and constantly requires the use of Rock Smash and Strength. In a misty cave, you'll discover TM26 (Earthquake). For more details on getting through the Seafloor Cavern check below.

Underwater Entrance

File:PRS&E Route 128 cave.png

The cave in Route 128 with the submarine.

File:PRS&E SeafloorCavern entrance.png

The entrance to Seafloor Cavern.

A cramped underwater area where you'll find the lost submarine that Team Aqua/Magma stole. Without much else to do use dive to surface.

Entrance and Entrance Room

File:PRS&E SeafloorCavern 1F.png

Floor 1

Well, you made it, the Seafloor Cavern. Now all that's left it to go inside. Use rock smash on the left rock, then push the boulder down. You may then push the other boulder to the right. The Entrance Room has two Team Aqua/Magma Grunts and three doorways leading to the Entrance, Room 2, and Room 4 (southeast corner).

Trainers

Trainer
	Team Magma Grunt Poochyena (lvl. 37) Numel (lvl. 37)

Trainer
	Team Magma Grunt Numel (lvl. 38)

Room 2

File:PRS&E SeafloorCavern 2F.png

Floor 2

Accessed from the entrance's southeast exit.

The south east corner leads to room 6.

Pictured above, it is accessed by the northwest exit from the entrance.

The southwest exit leads to a junction where you may either exit the cave, or head to room 5.

Room 3

File:PRS&E SeafloorCavern 3F.png

Floor 3

Both the middle and northwest lead to room 2. The northeast exit leads to Room 4 (southwest corner).

Room 4

File:PRS&E SeafloorCavern 4FRS.png

Floor 4 in Ruby/Sapphire

File:PRS&E SeafloorCavern 4FE.png

Floor 4 in Emerald

The room is meant to be crossed diagonally.

The northwest exit leads to room 5, and the northeast exit leads to room 6.

Room 5

File:PRS&E SeafloorCavern 5F.png

Floor 5

Room 6

File:PRS&E SeafloorCavern 6F.png

Floor 6

Room 7

File:PRS&E SeafloorCavern 7FRS.png

Floor 7 in Ruby/Sapphire

File:PRS&E SeafloorCavern 7FE.png

Floor 7 in Emerald

Trainer
	'Magma Admin Courtney Camerupt (lvl. 38) Mightyena (lvl. 38)

Room 8

File:PRS&E SeafloorCavern 8F.png

Floor 8

First, push the left and right boulders up. The middle boulder is pushed to the side. Push the next middle boulder up, the adjacent boulders to the side. In the last row, push the left and right boulders up, and the middle to the side.

Final Room

File:PRS&E SeafloorCavern 9FR.png

Floor 9 in Ruby

File:PRS&E SeafloorCavern 9FSE.png

Floor 9 in Sapphire/Emerald

TM26 is found at the entrance.

When you reach the southern part of the map, you will see the legendary Pokémon waiting. Then, you will be attacked by the leader of the antagonist team.

Trainer
	Magma Leader Maxie Mightyena (lvl. 41) Crobat (lvl. 41) Camerupt (lvl. 41)

After the battle, the orb will be used on the legendary to awaken and control it. However, the legendary will simply escape.

If you are playing Pokémon Ruby, the sunlight will become strong over Route 128, through Lilycove City.

Pokémon Found

Pokémon found (cave)

Ruby	Encounter Rate	Sapphire	Encounter Rate	Emerald	Encounter Rate
Zubat	90%	Zubat	90%	Zubat	90%
Golbat	10%	Golbat	10%	Golbat	10%

Pokémon found (Surfing)

Ruby	Encounter Rate	Sapphire	Encounter Rate	Emerald	Encounter Rate
Tentacool	60%	Tentacool	60%	Tentacool	60%
Zubat	35%	Zubat	35%	Zubat	35%
Golbat	5%	Golbat	5%	Golbat	5%

Pokémon found (Fishing)

Ruby	Encounter Rate	Sapphire	Encounter Rate	Emerald	Encounter Rate
Old Rod
Magikarp	70%	Magikarp	70%	Magikarp	70%
Tentacool	30%	Tentacool	30%	Tentacool	30%
Good Rod
Magikarp	60%	Magikarp	60%	Magikarp	60%
Tentacool	20%	Tentacool	20%	Tentacool	20%
Wailmer	20%	Wailmer	20%	Wailmer	20%
Super Rod
Wailmer	100%	Wailmer	100%	Wailmer	100%