Walkthrough:Pokémon Ruby and Sapphire/Part 15
These pages follow the original Game Boy Advance iteration, not Pokémon Omega Ruby and Alpha Sapphire. The guide for those games can be found here.
Mossdeep City



Mossdeep City sits on an island near Hoenn's eastern limits, between Route 124 to the west, Route 125 to the north, and Route 127 to the south. Weather conditions here are consistently clear and stable, making it the perfect place for the Mossdeep Space Center. The Mossdeep Gym, run by twin Gym Leaders, is located on the north side of the island. Steven's home can be found in the northwest.
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A Rock Fit for a King
Speak to the boy to the west of the Pokémon Center, and he talks about some odd-looking rock that he got from Steven. Unsure how to use it, he asks if you would like to have it. Agree to receive the King's Rock.
Secret Base hunter
The house to the west of the Pokémon Center is home to a brother and sister. The young boy likes to visit other people's Secret Bases, and will tell you where your Secret Base is located.
Steven's house
The northwestern-most house belongs to Steven. When you enter, he greets you and gives you HM08 (Dive). He explains that in certain bodies of water, there are darker patches where the water is especially deep. Using Dive over one of these spots lets you descend to the ocean floor far below. On the seabed, swim to a lighter patch where the sunlight filters down from above and use Dive again to return to the surface. This move gives you a way to chase after MaxieR/ArchieS in his submarine, but you will need the Badge from the Mossdeep Gym first!
Pokéblock specialist
The house to the north of the Pokémon Center belongs to a couple. The Black Belt is able to discern your lead Pokémon's preferred color of Pokéblock.
Running Errands
Visit the easternmost house, at the foot of the stairs to the Space Center. Inside, there is a young woman who uses a Wingull to send letters back and forth to her friend in Fortree City. Speak to Wingull and it will leave, setting off to deliver another note. If you return to Fortree City and speak to the young man in the northeast treehouse, he gives you a Mental Herb that the Seagull Pokémon found in its travels.
Score the Super Rod
Visit the northeast house and speak to the Fisherman inside to receive a Super Rod. This high-end fishing rod is the best model available and can reel in some of the strongest sea creatures.
Mossdeep Space Center
The Mossdeep Space Center stands on a large hill in the northeast. Speak to the Sailor near the viewing area on 1F to receive a Sun Stone that he recently found on the beach.
Mossdeep Gym

| Mossdeep City Pokémon Gym Leader: Lize & Tate The mystic combination! | |
The Mossdeep Gym specializes in Psychic-type Pokémon. Psychic-type moves are super effective against Fighting- and Poison-type Pokémon, while Psychic-type Pokémon are weak to Bug-, Dark-, and Ghost-type moves.
The Gym features a maze of white floor tiles, each with an arrow design. When stepped on, these tiles launch the challenger along the track in the direction of each arrow until they reach a normal floor tile. The direction of the several red floor tiles can be changed by flipping the corresponding switch. Go northwest from the entrance and flip the switch; this redirects the red tile to the west. Walk northward onto the arrow tiles to battle Psychic Preston. Step on this first red tile to move northeastward to the second, and battle Psychic Maura. Follow the nearby white tiles northward to battle Psychic Samantha, then flip the switch to the west; this redirects the second red tile. Go south, then south again to return to the entrance. Follow the white tiles around the southeast corner to battle Psychic Fritz. Flip the switch to redirect the third red tile, then go northeast to reach a single spot of normal flooring near Psychic Maura. Move southward to reach the northwest part of the Gym, and flip the fourth switch near Psychic Virgil. Go southward to return to the entrance again, and follow the white tiles around the southwest corner to reach the twin Gym Leaders.
Twins Tate and Liza send out both of their Pokémon at once, drawing challengers into a Double Battle. While Lunatone makes better use of special moves, Solrock is better suited to physical moves. Lunatone's Calm Mind raises both its Special Attack and Special Defense. This lets it deal increased damage with Psychic, and tends to make it the more threatening of the two Pokémon. Solrock has no physical moves to make use of its higher physical Attack, but Flamethrower and SolarBeam let it fight back against Grass- and Water-type Pokémon. As Lunatone can raise the team's Special Defense with Light Screen, physical moves tend to be more effective than special moves.
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After the battle, Liza and Tate award you the Mind Badge, which boosts a Pokémon's Special Attack and Special Defense by 10% during battle and enables the use of Dive in the field. The twins also give you TM04 (Calm Mind) as a prize. Afterward, you can step on the warp panel to the east for a shortcut to the entrance.
Route 125

Located to the north of Mossdeep City, Route 125 is a small patch of ocean with a large rock formation at its center. Shoal Cave can be found inside.
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Current hour: 7am (low tide)

Current hour: 7am (low tide)



Shoal Cave
Shoal Cave's appearance changes with the tides. Seawater floods the cave during high tide, closing off some areas and bringing others within reach. It then drains away during low tide, revealing new areas for exploration. The tides change every six hours, at 3:00 and 9:00.
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High tide
Chamber 1The CraftsmanSpeak to the elderly man in the first chamber, and he asks if you are planning to explore the cave. He makes a request: bring him some Shoal Salts and Shoal Shells, and he will craft something useful for you. Shoal Shells are found at high tide, while Shoal Salts are found at low tide. These resources are replenished each day, so there's no limit to the number collected. Bring him four of each item, and he fashions them into a Shell Bell. Use Surf and take the northwest doorway to the next chamber. Chamber 2Use Surf again to follow the water in a clockwise direction, collecting the four Shoal Shells and a Rare Candy along the way. Take the southeast doorway back to the entrance chamber to find a Big Pearl above the ledge. |
Low tide
Chamber 1The CraftsmanSpeak to the elderly man in the first chamber, and he asks if you are planning to explore the cave. He makes a request: bring him some Shoal Salts and Shoal Shells, and he will craft something useful for you. Shoal Shells are found at high tide, while Shoal Salts are found at low tide. These resources are replenished each day, so there's no limit to the number collected. Bring him four of each item, and he fashions them into a Shell Bell. Move northward and take the north-central doorway to the next chamber. Chamber 2Climb up the stairway and continue north. Turn eastward and climb down the east-central ladder. Chamber 3Pick up the Shoal Salt and Ice Heal, then climb northward and take the northwest ladder. Chamber 2Move west over the larger bridge, then east over the smaller one. Climb down the ladder in the center of the chamber. Chamber 4Go east to find a Black Belt; speak to him to receive a Focus Band. Continue east to find another Shoal Salt. Use Strength to move the boulder eastward, then climb down the southeast ladder. Chamber 5The deepest chamber is permanently encased in ice, and the slippery floors make travel difficult. Slide southward across the first two ice patches. At the third patch, slide westward to the small clear spot in the center, then north to a larger clear spot. Take one step westward, then slide south and west to the final small clear spot; move south, east, then north from here to continue on. At the final ice patch, slide north to the small clear spot; move west, south, east, then north from here to reach the elevated ridge. Collect the NeverMeltIce from its south end. Return to the clear spot near the stairway, then slide to the cavern's northwest corner. Move east, then south to a larger clear spot. Slide north to the rock near the northwest corner. Move east, south, and west to the rock next to the ridge. Slide north, west, south, then west again to reach the small clear spot. Finally, move north, east, then south to reach TM07 (Hail). |
Route 127


Route 127 connects Mossdeep City to the north, Route 126 to the west, and Route 128 to the south. With little more than wide open ocean, it is very difficult for a Swimmer to make it across this route.
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| This article is part of Project Walkthroughs, a Bulbapedia project that aims to write comprehensive step-by-step guides on each Pokémon game. |











