It is a Quartz Composer realisation showing two bubbles underwater. You can use it as a Screen Saver.
Use the 'Vomitive Effect' and put the screen saver on a large display. In particular you can use it when:
- You are Hungry and it not time
- You don't like person around your desk
- At the end of a conference speech and you don't want many questions
- You want to train yourself remain all right on a boat