Unlocking Hidden Riches and the Mermaids' Gym in Pokémon Pokopia's Bubbly Basin DLC
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Unlocking Hidden Riches and the Mermaids' Gym in Pokémon Pokopia's Bubbly Basin DLC

authorBy Shigeru Miyamoto
DateAug 07, 2026
Read Time3 min

In the expansive world of Pokémon Pokopia, particularly within the captivating Bubbly Basin DLC, a series of hidden treasures awaits discovery. These valuable items, unearthed through daily shining spots, are intricately linked to treasure maps left behind by a vanished human civilization. While the maps themselves aren't strictly necessary for locating these forgotten riches, they serve as invaluable guides. The ultimate reward for diligently pursuing these collectibles is the ability to craft a unique habitat, the 'Mermaid's Gym,' a dwelling essential for the appearance of the majestic Starmie in your virtual town. This guide outlines the precise whereabouts of all six decorative Poké Balls and details the steps required to assemble Starmie's aquatic abode.

Details of Treasure Discovery and Habitat Construction

The quest for hidden treasures in Pokémon Pokopia's Bubbly Basin DLC leads players through a series of intriguing locations, each guarding a distinct decorative Poké Ball. For the first treasure, the Decorative Great Ball, adventurers must venture to the bathing house adjacent to the Pokémon Center. Descending the stairs on its left side, they will encounter a wall of blue rocks past a bench, which, once destroyed, reveals a secret chamber housing the prize. The second treasure, a Decorative Heal Ball, is concealed within an underground room northeast of the ocean temple. Players should swim past the towering red-roofed structure to the area where Barboach was initially encountered during the 'Build the Beautiful Building!' quest. By meticulously breaking ground blocks near the large coral, the path to the Heal Ball's hiding spot will become clear. The third treasure, the Decorative Dive Ball, lies near the abandoned gym in Bubbly Basin. Accessible by heading east from the main square, players will need to break through a wall of dirt blocks to reach the gym. Turning south from the building's front, a wall of star-spotted rocks must be demolished to uncover the Dive Ball. The fourth treasure, a Decorative Net Ball, is situated in the cave northwest of the main square, the same location where Frillish was found during the 'Build the Beautiful Building!' quest. Upon entering, players should re-enter the water to navigate past nets blocking the path. Further exploration will lead to a room adorned with tracks and blue crystals, where a wall of blue rock on the southeastern side conceals the Net Ball. The fifth treasure, a Decorative Lure Ball, is found near a distinctive house with a yellow mailbox on the northeast side of the map, an area known for its portal pods. Digging on the west side of this house, amidst coral formations, will expose the room containing the Lure Ball. Finally, the sixth treasure, the Decorative Quick Ball, awaits in the southern reaches of the map, close to the Bubbly Basin gate. From the gate, players should travel north, descend the stairs, and then turn west. Behind the remnants of a house, a wall of star-spotted rocks must be breached to gain access to the room holding the Quick Ball. Once all six decorative Poké Balls are acquired, the 'Mermaid's Gym' habitat, the residence of Starmie, can be constructed. The essential components for this habitat include one marine sofa and six pedestal/exhibition stands. A shortcut for acquiring the stands is to visit the abandoned gym from Treasure Map #3, where six such stands can be found. After collecting the decorative Poké Balls, simply place them atop the exhibition stands in any order. The final step is to incorporate a marine sofa, for which most players would likely already possess the crafting recipe, completing the habitat and inviting Starmie to your flourishing town.

This treasure hunt within Pokémon Pokopia offers more than just valuable collectibles; it enriches the gameplay experience by adding a layer of exploration and reward. The meticulous process of uncovering these hidden items and subsequently constructing the 'Mermaid's Gym' habitat provides a satisfying sense of accomplishment. It underscores the importance of environmental interaction and strategic item utilization within the game, ultimately enhancing the player's connection to the captivating world of Pokopia and its diverse Pokémon inhabitants.

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