Walkthrough: Just off Memorial Hill is the Akala Outskirts, which lead right to the Ruins of Life. Here you will find many Wild Pokemon and Trainers, and at the very end, you will be challenged by the Team Skull Admin Plumeria. She had heard from Gladion on about you, as well as a number of her brothers apart of Team Skull, and she wants to see just how strong this trainer defeating her group truly is.
Wild Pokemon:
Grasses - Daytime (Levels 20-23): Wingull(50%), Gumshoos(30%), Nosepass(15%), Stufful(5%)
Grasses - Nighttime (Levels 20-23): Wingull(50%), Raticate(30%), Nosepass(15%), Stufful(5%)
Fishing (Levels 10-23): Magikarp(79%), Wishiwashi(20%), Chinchou(1%)
SOS Pokemon #1 (Levels 10-23): Gyarados, Wishiwashi, Chinchou
SOS Pokemon #2 (Levels 10-23): Magikarp, Wishiwashi, Chinchou
Fishing Bubble Spots (Levels 10-23): Magikarp(60%), Chinchou(20%), Wishiwashi(20%)
SOS Pokemon #1 (Levels 10-23): Gyarados, Chinchou, Wishiwashi
Zygarde Cells: There is one Zygarde Cell found here.
Trainers:
Fisherman Vernon - Level 23 Staryu, Level 23 Gyarados
Black Belt Kenji - Leevel 24 Hariyama
Team Skull Admin Plumeria - Level 25 Golbat, Level 26 Salandit
Items:
TM28 Leech Life - Near Fisherman Vernon
Tiny Mushroom - Grass South of Black Belt Kenji (Hidden)
Big Mushroom - Grass West of Black Belt Kenji (Hidden)
Tiny Mushroom - Grass East of Black Belt Kenji (Hidden)