Try route 222
dive underwater
you go in the orburgh gate, (the path east of jubilife city) keep walking and this hiker will catch you and give it to you.
Go to Sandgem town, and one day in the big house (Dawn's House.) talk to dawn's little sister and she will tell you that there is a swarm of Cubone east of Jubilife City. Your welcome. :)
First you have to catch Cobalion in the Challengers cave and then you go to Pinwheel Forest. In the east there is a passage to a small field and Virizion is there.
In solaceon town, go to the old lady's house which is in the east, talk to her and she will give you the seal case.
shellos evolves at level 30 (both west and east sea ) your welcome.
dive underwater
To the immediate North and East of Jubilife at any time of day
*Magikarp *Gyarados *Psyduck *Golduck *Buizel *Floatzel *Shellos (East/West) *Gastrodon (East/West) *Goldeen *Barboach *Wingull *Pelipper *Marill *Remoraid *Tentacool *Tentacruel *Feebas *Mantyke *Manaphy *Phione
Ditto can be caught on Route 218 (east of Canalave City) with the Poke Radar. It is rare, however.
Both the West Sea and East Sea variation both evolve into West Sea and East Sea Gastrodon at level 30.
The island to the right is where you can catch Shaymin. The one in the southeast is Seabreak Path. The one in the east is Flower Paradise, where you can catch Shaymin.
you go in the orburgh gate, (the path east of jubilife city) keep walking and this hiker will catch you and give it to you.
You cannot catch Grovyle in Diamond but the only way you can is by having Ruby,Saphhire or Emerald and having Treeko then evole it to Grovyle and migrating it to Diamond if you have Pal Park (south east of Sandgem) but the only way to go to Pal Park is to have the National Dex.
You have to go east of eterna city.
East or West exits.
route 211 east & use pokeradar