To be honest, not a lot:
-earn Effort (EV) Ribbons (raise your team at least up to Lv. 45 or higher)
-compete in the Hyper Rank Contest Hall (Battle Tent if you're playing Emerald)
-buy Poké Supplements to raise your team (e.g. Zinc, Protein, HP UP, etc.)
-buy furniture/dolls/blocks for your Secret Base
-fight Team Aqua/Magma in the Science Museum (only once)
-trade the Scanner in for a Deepseascale (Gorebyss) or Deepseatooth (Huntail) to equip & evolve your Clampearl (via trade; you can only choose 1 of the equip items to make it hold)
-name rate/rename your Pokémon
-visit the Pokémon Fan Club, (you will receive a Silk Scarf by talking to the guy on the couch when you enter) and do an interview about your team/Pokémon in general (just like Gaby & Ty & the Battle Tower interviewer)
its at the top part of slateport;go to the northernmost part of the city then take a right. hope this helped
he's not in there! he's in slasport city his worker is in the abandoned ship and he asks you to find the generator or something i forgot then you have to find it and then you go talk to him and he will tell you to go to captain stern and then go to slaport city and then he will trade you for something. hope i helped :)
in the slateport city u find a old man change nick in Pokemon
He is in Slateport City.
Oceanic Museum in Slateport City
its at the top part of slateport;go to the northernmost part of the city then take a right. hope this helped
Slateport City doesn't have a gym.
Its in Lilycove or Slateport. Its in Lilycove or Slateport.
It's in the top right hand corner of slateport city.
Vermillion City is in Knato and Slateport is in Hoenn; you can't.
he is in the laboratory in slateport that has many boats and near the bazaar
he's not in there! he's in slasport city his worker is in the abandoned ship and he asks you to find the generator or something i forgot then you have to find it and then you go talk to him and he will tell you to go to captain stern and then go to slaport city and then he will trade you for something. hope i helped :)
there is no gym in slateport, the next gym would be in mauville with electric pokemon
go to the harbor at slateport city.
he is in the slateport harbor, right above the Pokemon center
he goes to slateport. you have to search every inch of slateport. Joe Mama
SLATEPORT CITY.Kimm57:Go to Slateport City, then go southwest of the Pokemon contest