Welcome to The Plunge. Your mission is to find the secret treasure at the bottom of the cave. Be careful though... the cave is covered in traps! Use the mouse to move your ship through the cave avoiding all of the obstacles including the ocean bottom. Your ship can only take 2 hits before it cracks so be careful not to hit anything. In order to deal with some of the more nasty enemies your sub is equipped with a gun. Click to shoot it. Good luck and have fun!