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The Shell Chair (Japanese: かいがらのいす) is an item in Densetsu no Starfy 2. It is found in Stage 2-1 (Gluglug Lagoon) in a room full of Pinpin with the Cheap Chair and the Zabuton. When Starfy approaches one of these items, the game will ask whether the player wants to collect it.
In the story, Ruby asks Starfy to find her some furniture, including the Vase of Roses, the Coral Table and the Shell Chair. Ruby accepts the Shell Chair from Starfy. Bringing her all three correct furniture lets Starfy enter the door that leads to the Showy Showy Costume Treasure.