Pokopia players restoring the Bubbly Basin region must obtain Ocean Doors as part of constructing an ocean temple requested by the character Popplio. Unlike most building materials in the area, these doors cannot be collected directly but instead require a crafting recipe found inside a Pokéball concealed beneath the rubble and sand at the top of the central staircase. Players can unlock the recipe by clearing debris using Pokémon moves such as Rock Smash and Rollout during the restoration effort.

After obtaining the recipe, players can craft the Ocean Doors at any crafting station using Star-Spotted Rocks as the sole material component. The temple requires two completed doors, necessitating the gathering of two Star-Spotted Rocks from the surrounding Bubbly Basin region or the connected Dream Island. These stone blocks are plentiful throughout both locations, making material acquisition straightforward once the recipe has been secured.