From Bulbapedia, the community-driven Pokémon encyclopedia.
Bountiful Sea (Japanese: ゆたかなうみ Bountiful Sea) is a Friend Area in Pokémon Mystery Dungeon: Red Rescue Team and Blue Rescue Team. It is available for 5,500 Poké from Wigglytuff in Pokémon Square. It is in the Northern Ocean area, and has a capacity of nine Pokémon, all of them Water-type.
Bountiful sea contains several small huts shaped like beehives. They surround a large, detailed floor pattern made of concentric circles.
A sea where warm and cold currents come together. It is bursting with marine life and is also rich in minerals.