Not fifty yards from the beach, and just at the point where the bobbing brown bulbs were thickest, a small hand and an arm broke the surface of the water. The fingers of the hand closed convulsively and a ring glittered in the sunlight. Then the hand vanished. With a vigorous crawl stroke,--keeping well on the surface for safety,--I tore through that intervening space. Oh!--how I thanked God for my exceptional ability in diving and swimming under water. As I got over the spot where I reckoned the hand had appeared, I became cautious, for I knew the danger and I had no desire to get entangled and thus end the chances of both of us. I sank down, slowly and perpendicularly, keeping my knees bent and my feet together, feeling carefully with my hands the while. The water was clear, but I could see only a little way because of the seaweed. How thickly it had gathered! Long, curling, tangling stuff! Several times, I had to change my position quickly in order to avoid being caught among the great, waving tendrils which, lower down, interweaved like the meshes of a gigantic net. I stayed under water as long as I dared, then with lungs afire I had to come to the surface for air. Desperately, I started again. I swam several yards nearer to the rocks and sank once more. This time, my groping hands found what they were seeking. Far down, almost at the bottom of the sea, the body of Miss Grant lay. I passed my hands over her. Her head and arms were clear of the awful tangle, but both her legs were enmeshed. Fighting warily and working like one possessed, I tore at the slithering ropes and bands that bound her. I got one foot and leg clear, then, with bursting lungs I attacked the other. It seemed as if I should never get her free. How I fought and struggled with that damnable sea-growth! fearing and fearing afresh that I would have to make to the surface for air, or drown where I was. As I worked frantically, I grew defiant, and decided to drown rather than leave the girl who had already been far too long under water. My head throbbed and hammered. My senses reeled and rallied, and reeled again as I tore and struggled. Then, when hope was leaving me, I felt something snap. I caught at the body beside me and I drifted upward, and upward;--I did not know how or where. The thought flashed through me;--this is the last. It is all over. I opened my throat to allow the useless carbonised air to escape. I was conscious of the act and knew its consequences:--a flood of salt water in my lungs, then suffocation and death. But I did not care now. My lungs deflated, then--oh! delicious ecstasy!--instead of water, I drew to my dying body,--air; reviving, life-giving, life-sustaining oxygen. I panted and gasped, as life ran through my veins. Blood danced in my thumping heart. I caught at my reeling senses. I clutched, like a miser, at the body I held. I struggled, and opened my eyes.