Berry Island (果実島 Kajitsu Shima, lit. Berry Island) is a small town located on Lingon Island in the Tropi Archipelago. Phoebe of Hoenn'sElite Four was originally born here. She visits the island during the spring and summer, at which time she can be battled. The town's motto is "Tropical Breeze Whistling".
Phoebe, the second of the Hoenn Elite Four, lives in Berry Island. She grew up on the island before moving to Hoenn. Her house is located in the eastern side of the town, and she visits it during Spring and Summer, where she is willing to battle Trainers.
Smack dab in the middle of the island is a Mock Gym where Trainers can battle a Mock Gym Leader. This is considered good practice for those who have yet to battle a Gym Leader, and good fun for those who've already battle before. The victor earns no badge, but gets a plaque for defeating 4 "leaders" in a row.