The yellow submarine under the control of the brave captain is ready for launch. You are about to raise treasure chests from the deep ocean floor. The descent will take place gradually as you answer the questions correctly in the Submarine Spelling Practice. Listen carefully to the words, and then spell them into empty cells. Without sound, it will be harder for you to determine which word should appear. On the right on the vertical scale you will see how the boat slowly but surely decreases, getting to the chest. Make no mistake and all the treasures will be yours.