you have to
in Mossdeep city, Artard
in mossdeep city
in mossdeep city
In mossdeep city.
You have to surf there first. From Lilycove City, you surf to the right till you reach Mossdeep City.
in mossdeep city {space center}
not
Mossdeep city
Shoal Cave above Mossdeep City
How do you unlock the door in the old man's house who lives on mossdeep city on Pokemon Ruby
you can get a sun stone from the space center in mossdeep city.