Go to Space Center and......you will see Team Magma.
Go to the Pokemon league.
mossdeep city
Mossdeep Island; surf east along route 124 from Lilycove. To do this you'll have to have cleared out the Team Aqua base, as there is an aqua grunt trying to move a pack (flock?) of Wailord in your way.
You should get a Duskull and evolve it [it evolves at lvl 37 to Dusklops] then get a Shuppet the evolve that [it evolves at lvl 37 too] then teach it a ghost type move or dark type move, then train and that is how to beat the 7th gym leader in Pokemon Emerald. Good luck!!
Go to Space Center and......you will see Team Magma.
i think you get to the underwater cavern after beating the 7th gym leader
In 7th gym
Go to the Pokemon league.
mossdeep city
you go and deafeat the 7th gym then you go to the space station and deafeat a few magma grunts and team up with steven
Mossdeep Island; surf east along route 124 from Lilycove. To do this you'll have to have cleared out the Team Aqua base, as there is an aqua grunt trying to move a pack (flock?) of Wailord in your way.
Good question, Getting past the Wailmers is one of the hardest parts of the game. I do not remember Perfectly but i think that you have to go to mount Piere and fight of the team that is there. Then go to slateport and go by the research place (bunch of reporters) go in see team aqua and Then you can come back and, STOP... Make sure you defeat the aqua hideout which is located in the big cave right in the water. Right after you pass the wailmers go up and you should find a door, it is the team aqua hideout. Only go in if you are ready and just so you know there is a master ball in the hideout. Then i guess you can go to mossdeep city and fight the 7th gym leader. Remember i am not certain this if the right way to do it. If this turns out to be wrong you could find a walkthrough for Pokemon emerald and use that. I am sure you could Google Pokemon emerald walkthroughs and ficd a few decent ones.
In Pokemon Sapphire, Ruby and Emerald the 7th Gym that's located in Mossdeep City has Psychic type Pokemon.
a team that includes water and dark attacks
Any Pokemon with ice or electric moves
Depending on who it is, you still have to beat the Brain.