I dove into the shimmering sea. Up ahead I could see a small crack of light gleaming out from the dome. Cautiously, I swam to the opening. I felt for any weaknesses, in case I could make the crack bigger. Eventually I found a gap and was plunged into blackness! As my eyes adjusted, I was sucked into an exquisite labyrinth. I looked in front and behind. Which way? Out of the corner of my eye, I spotted a loose stone, but as I pulled the brick out, everywhere around me exploded and I was sprung up onto the safety dry land!