Water Gun is the move from Squirtle that Ditto uses to hydrate dried plants in Pokémon Pokopia. The game repurposes the familiar move as an environmental tool rather than treating it solely as a battle attack.
After befriending Pokémon, Ditto can learn and use some of their moves. Squirtle’s Water Gun lets the player supply water to plants that have dried out, supporting the broader goal of restoring the wasteland and creating a comfortable habitat.
Water Gun is easy to confuse with other Water-type moves, especially Bubble or Rain Dance. Those moves are not the specific example given for watering plants in Pokopia. Bulbasaur provides the contrasting example: its Leafage helps add grass and greenery, while Squirtle’s Water Gun provides hydration.