mossdeep city
dhoom
Use dive.
You can get Dive in Pokemon Emerald by going to Mossdeep City and ensure you check all the houses.
you can find dive balls at the mossdeep city pokemart
you dive at route 128 by sootopolis city
In Mossdeep City from Steven after you have defeated Team Magma.
simpliy the dark spot leading to sootopolis you have to use dive
you get from the gym leader in mossdeep city NO YOU DONT I WENT THERE AND I BEAT THE TWINS I DIDNT GET DIVE
You must have dive. Dive from Mossdeep City and enter the cave to your lower left. Dive right back up and you will see Groudon and Kyogre fighting.
You have to use Dive in Sootopolis City and look for it under the sea.
go to Stevens house at mosdeep city i think it was?
get rayquaza
Yes, Clamperl can be caught in Pokemon Emerald. You have to have a Pokemon that knows the move Dive, which can be taught through HM08 - Dive. HM08 is found in Steven's house in Mossdeep City, but only after you have beaten the city's gym leaders. Clamperl can be caught on routes 124 and 126 underwater (use Dive on the dark spots in the ocean).