The rules are simple: light and render this scene as if it were underwater. Models are available for download here:
Objects will need subdivision (polygon smoothing) before you render. You may need to move, modify, or duplicate models to make the scene as you picture it. All shading and rendering techniques are fine. The rules are to have fun, make a cool underwater rendering, and share how you did it afterwards.
Credits: This scene was modeled by Serguei Kalentchouk (known as ShadowM8 on this forum.) If you put your renders on your webpage or showreel, don't forget to mention who did the modeling!