A rich young man decided that he would like to do some diving(潜水) in the sea, so he bought a diving suit and all the other things that he needed, and took some lessons at a diving school. Then one day he walked into the water by himself and began to explore(探索) the bottom(底部)of the sea. He saw a lot of beautiful fish and other things, and then, after half an hour, he suddenly saw a man waving(摇动)his arms and legs around wildly near the bottom of the sea. He was wearing only a bathing suit. The rich young man was very surprised to see him, so he took out a plastic notebook and a special pencil, which could write under water, and wrote, “What are you doing here?” He showed the notebook to the other man, who then took the pencil and wrote, “Drowning!”(溺水)