After the exciting events unfold at the Spear Pillar atop Mount Coronet, your next destination can be reached via Route 222.
Explore the Route
In the grass in this area, you can catch Chatot (daytime only), Floatzel, Gastrodon, Glameow (Shining Pearl only), Mr. Mime (Brilliant Diamond only), Purugly (Shining Pearl only), and Wingull. When Surfing in the water here, you can encounter Pelipper, Tentacool, Tentacruel, and Wingull. If you fish here with the Old Rod, you can catch Magikarp, and if you fish here with the Good Rod, you can catch Remoraid and Magikarp.
If you go northwest in the grass of Route 222, there is a hidden Full Restore between rows of trees.
Go southeast from there and you can battle Rich Boy Trey, who has a level 43 Luxio. You get 7052 Pokédollars for winning.
Northeast of there, you will find some berry trees.
There are stairs to the east, but if you go just south of them, you can walk east to find a jar of Honey.
Go west from there, then north, then east up the short flight of stairs. You can battle Beauty Nicola, who has a level 43 Lopunny. You get 2580 Pokédollars for winning.
Go east down the short flight of stairs, then go northeast and follow the narrow path to reach a short flight of stairs to the south. Go south up those stairs, then west, and check on the corner at the end of the grass to find a hidden Ultra Ball.
Go east from there to find a tree that you can cut down with Cut. Go south from there to find a bottle of Carbos.
Go north, then west, then north down the short flight of stairs, then west. When you reach the stairs leading east and west, go up the stairs to the east, then go southeast and talk to the Rich Boy to get some TM56s, which teach Fling.
Go east and you can battle Police Officer Thomas, who has a level 42 Noctowl and a level 42 Machoke. You get 1848 Pokédollars for winning.
Go east from there, and there is a Sailor and a Tuber. You can either battle them separately talking to them from the north or south, or battle them at the same time by walking between them when they are facing each other.
Sailor Marc has a level 43 Mantyke. You get 1548 Pokédollars for winning.
Tuber Conner has a level 43 Remoraid. You get 344 Pokédollars for winning.
To the west, there are two houses. The one on the right has the Pokémon Size Contest. You can talk to the person there to show the requested pokémon, and if the pokémon is big enough, you get a prize. You can keep showing bigger-sized pokémon of the requested type to get additional items.
In the house west of the Pokémon Size Contest, you find a Pikachu Fan Club building. If you talk to the person who is dressed as Pikachu, you battle Poké Kid Janet, who has two level 41 Pikachus. You get 492 Pokédollars for winning.
Go outside. Southeast of the two buildings, there is a rock that you can break with Rock Smash. Go south after you break the rock, then go east, and go north up the short flight of stairs. There is a jar of Honey hidden in the northernmost empty spot in the grass.
Go south down the short flight of stairs, then go east, then use Surf in the water to the southeast. Surf to the east, then go north onto land. There is a Big Mushroom hidden in the grass to the north.
Surf west, then go north onto the sand. To the west, you can battle Tuber Holly, who has a level 43 Remoraid. You get 344 Pokédollars for winning.
To the west, you can battle Fisher Cole, who has two level 41 Gyarados and a level 38 Remoraid. You get 1476 Pokédollars for winning.
To the west, you can battle Fisher Brett, who has a level 39 Magikarp, a level 42 Finneon, and a level 39 Feebas. You get 1404 Pokédollars for winning.
To the west, you can battle Fisher George, who has a level 38 Magikarp, a level 40 Remoraid, a level 42 Gyarados, and a level 40 Finneon. You get 1512 Pokédollars for winning.
To the west, you can battle Fisher Alec, who has a level 40 Magikarp and a level 42 Gyarados. You get 1512 pokédollars for winning.
Go back east and up the short flight of stairs to reach the road again. Go east and you will battle Sailor Luther, who has a level 37 Feebas, a level 43 Gastrodon, and a level 40 Machoke. You get 1548 Pokédollars for winning.
Go east and there is a tree to the northeast that you can slather with Honey.
Go southeast and enter the building, then go east again to reach Sunyshore City.