You just need to turn around the pipes, to connect them from the water reserve to the different elements on the screen that need water.
Your goal is to connect the pipes and to create water paths from the valves to the containers. Fill the pipes with water and all the plumbing to end the level. Enjoy the beautifull and relaxing atmosphere of this game, and dive into the ocean full of fish, sharks, medusa, rays, coral's reefs and other amazing sea life. Do you really think you have real plumber's skills ?