Christopher certainly understood what it meant to be in the water. Walt pictured him floating on his back at the YMCA in Oviedo, where he'd learned to swim. Walt had spent hours there teaching him to float, Christopher with his green goggles strapped across his face, laughing, looking up at the ceiling painted to look like a sky.
At the Y, Christopher was a regular boy. The lifeguards knew him by name, let him go into the utility closet and pick out a foam ring to play with in the water, the same green one every time. He always walked the tiled stoop around the pool, feeling the water on the tops of his feet. Then he'd jump in. Walt would show him how to fill his stomach with air so he could float, then pull him along by his shoulders, walking him around the left lane of the pool.
Out at sea, in the fading light, Christopher rose and dipped from Walt's line of sight. Walt tried to talk to his son to keep him calm, reciting his favorite lines from his favorite movies. Christopher loved to sit right in front of the small television in his room and watch Disney videos all day. Sometimes he would put his eyeball as close to the screen as he could get it without touching. His all-time favorite scene was Buzz Lightyear in Toy Story, flying into space, saying his trademark phrase: "To infinity ... and beyond!"
"To infinity!" Walt yelled to Christopher over the waves. He waited for Christopher to respond.
"To infinity, Christopher!"
"... and beyond!" lightly from atop the wave, as Christopher was lifted back into view. It didn't sound like that when Christopher said it, though. It always sounded like "infin' a beyon'..." And he'd always send his fist into the air. That little fist pump – Walt did it in the water then, too, even though he was trying to conserve energy.
After a while the first helicopter left and another took its place, its blue light flickering over the open water. Looking out toward the black sky, Walt began to wave his arms, certain now that no one could hear him. Christopher pounded his fist against the waves. A group of jellyfish interrupted them, swimming into Walt's and Christopher's legs, clutching onto them and burning like strands of electric hair. Christopher shrieked. Then Walt was lifted up at the same time Christopher was lowered. When the tide evened, Christopher was even farther away, 30 or 40 feet. Walt tried to swim toward him, flapping his arms as hard as he could. Then a wave lifted Christopher, and Walt was caught on the other side. When the wave broke, Christopher was no longer there.