You have to have a poke'mon with dive.
Mossdeep City............
mossdeep city dhoom
In Mossdeep City.
mossdeep city
it's in mossdeep city
Mossdeep City.
in mossdeep city
North of Mossdeep City.
The Space Center is located on a hill on Mossdeep City's eastern side.it is in mossdeep city
the 7th gym is in mossdeep city
You get it from Steven Stone in Mossdeep city.
look in mossdeep city