It depends on if you've gone to Mt. Pyre yet. If not, head there (you get there from route 121 to 122, then surf to the entrance.) make your way to the top and let the cutscene play out. Then go to Slateport city and help out the museum. From there, Team Aqua's base in the east of Lilycove is no longer blocked by Wailmer, so you can get inside.
go into shoal cave and defeat team aqua
Yes in Lilycove City
From lilycove city if you go east you can reach mossdeep city.
It's in Lilycove City.
Nothing
In lilycove city.
lilycove city
he is in lilycove city
yes in lilycove city
you go next into lilycove city.
There is no Lilycove in Pokemon Diamond or Pearl. Lilycove is exclusive to GBA Pokemon Games Ruby, Emerald, and Sapphire.Are you looking for...Lileep - PokemonCanalave - City
the seven islands near lilycove city
at lilycove city is where i found it out