A hidden room in Bleak Beach's waterway contains a sprinkler you can recover without waiting for a shop offer. Use the Pokémon Center as the starting landmark. The entrance is down in the channel, so checking only street-level doors misses the route.
Follow the channel to the room
- Go to the waterway directly in front of the Center and descend to its accessible lower level. Follow the channel beneath the bridge rather than climbing back onto the street.
- At the wooden obstruction, inspect the rock blocks beside it. Use Rock Smash to open the neighboring route and continue along the waterway.
- Follow the passage to the concealed room, find the Sprinkler and put it away. Inspect the surroundings before leaving so you can recognize the return path.
Use the recovered sprinkler near a water source
Place it beside a suitable water source at the field where you want irrigation and check the neighboring crop area. It waters nearby soil; owning the item in your bag does not water crops, and placing it on dry ground far from a source is not the same setup.
Keep a reference if you want more
Take an object-mode reference photo before putting it away if you want to print another sprinkler later. A reference photo and an ordinary souvenir shot serve different purposes. If you cannot find the hidden room, return to the Center and check the lower channel and rock beside the barrier before searching an unrelated cave.
