Question for those that have read The Body by Stephen King
What did Gordie dream? What does it symbolize?

Referring to this part:
At last I slipped into something I knew was a dream. Chris and I were swimming at White's Beach, a gravel-pit in Brunswick that had been turned into a miniature lake when the gravel-diggers struck water. It was where Teddy had seen the kid hit his head and almost drown. In my dream we were out over our heads, stroking lazily along, with a hot July sun blazing down. From behind us, on the float, came cries and shouts and yells of laughter as kids climbed and dived or climbed and were pushed. I could hear the empty kerosene drums that held the float up clanging and booming together - a sound not unlike that of church bells, which are so solemn and emptily profound. On the sand-and-gravel beach, oiled bodies lay face down on blankets, little kids with buckets squatted on the verge of the water or sat happily flipping muck into their hair with plastic shovels, and teenagers clustered in grinning groups, watching the young girls promenade endlessly back and forth in pairs and trios, never alone, the secret places of their bodies wrapped in Jantzen tank suits. People walked up the hot sand on the balls of their feet, wincing, to the snackbar. They came back with chips, Devil Dogs, Red Ball Popsicles. Mrs Cote drifted past us on an inflatable rubber raft. She was lying on her back, dressed in her typical September-to-June school uniform: a grey two-piece suit with a thick sweater instead of a blouse under the jacket, a flower pinned over one almost nonexistent breast, thick support hose the colour of Canada Mints on her legs. Her black old lady's high-heeled shoes were trailing in the water, making small Vs. Her hair was blue-rinsed, like my mother's, and done up in those tight, medicinal-smelling clock spring curls. Her glasses flashed brutally in the sun. 'Watch your steps, boys,' she said. 'Watch your steps or I'll hit you hard enough to strike you blind. I can do that; I have been given that power by the school board. Now, Mr Chambers, "Mending Wall", if you please. By rote.' 'I tried to give the money back,' Chris said. 'Old lady Simons said okay, but she took it! Do you hear me? She took it! Now what are you going to do about it? Are you going to whack her blind?' ' "Mending Wall," Mr Chambers, if you please. By rote.' Chris threw me a despairing glance, as if to say Didn't I tell you it would be this way?, and then began to tread water. He began.' "Something there is that doesn't love a wall, that sends the frozen ground swell under it -"' And then his head went under, his reciting mouth filling with water. He popped back up, crying: 'Help me, Gordie! Help me!' Then he was dragged under again. Looking into the clear water I could see two bloated, naked corpses holding his ankles. One was Vern and the other was Teddy, and their open eyes were as blank and pupil less as the eyes of Greek statues. Their small prepubescent penises floated limply up from their distended bellies like albino strands of kelp. Chris's head broke water again. He held one hand up limply to me and voiced a screaming, womanish cry that rose and rose, ululating in the hot sunny summer air. I looked wildly towards the beach but nobody had heard. The lifeguard, his bronzed, athletic body lolling attractively on the seat at the top of his whitewashed cruciform wooden tower, just went on smiling down at a girl in a red bathing suit. Chris's scream turned into a bubbling water choked gurgle as the corpses pulled him under again. And as they dragged him down to black water I could see his rippling, distorted eyes turned up to me in pleading agony; I could see his white starfish hands held helplessly up to the sun-burnished roof of the water. But instead of diving down and trying to save him, I stroked madly for the shore, or at least to a place where the water would not be over my head. Before I could get there - before I could even get close I felt a soft, rotted, implacable hand wrap itself around my calf and begin to pull. A scream built up in my chest ... but before I could utter it, the dream washed away into a grainy facsimile of reality. It was Teddy with his hand on my leg. He was shaking me awake. It was my watch.