Sundiver
by David Brin
PART I
… it
1. OUT OF THE WHALE-DREAM
“Makakai, are you ready?”
Jacob ignored the tiny whirrings of motors and valves in his metal cocoon. He lay still. The water lapped gently against the bulbous nose of his mechanical whale, as he waited for an answer.
One more time he checked the tiny indicators on his helmet display. Yes, the radio was working. The occupant of the other’ waldo whale, lying half submerged a few meters away, had heard every word.
The water was exceptionally clear today. Facing downward, he could see a small leopard shark swim lazily past, a bit out of place here in the deeper water offshore.
“Makakai… are you ready?”
He tried not to sound impatient, or betray the tension he felt building in the back of his neck as he waited. He closed his eyes and made the delinquent muscles relax, one by one. Still, he waited for his pupil to speak.
“Yesss… let’sss do it!” came the warbling, squeaky voice, at last. The words sounded breathless, as if spoken grudgingly, in lieu of inhalation.
A nice long speech for Makakai. He could see the young dolphin’s training machine next to his, its image reflected in the mirrors that rimmed his faceplate. Its gray metal flukes lifted and fell slightly with the swell.
Feebly, without their power, her artificial fins moved, sluggishly under the transient, serrated surface of the water.She’s as ready as she’ll ever be, he thought. If technology can wean a dolphin of the Whale-Dream, now’s the time we’ll find out.
He chinned the microphone switch again. “All right, Makakai. You know how the waldo works. It will amplify any action you make, but if you want the rockets to cut in, you’ll have to give the command in English. Just to be fair, I have to whistle in trinary to make mine work. ”
“Yesss!” she hissed. Her waldo’s gray flukes thrashed up once and down with a boom and a spray of saltwater.
With a…half muttered prayer to the Dreamer, he touched a switch releasing the amplifiers on both Makakai’s waldo and his own, then cautiously turned his arms to set the fins into motion. He flexed his legs, the massive flukes thrust back jerkily in response, and his machine immediately rolled over and sank.
Jacob tried to correct but overcompensated, making the waldo tumble even worse. The beating of his fins momentarily made the area around him a churning mass of bubbles, until patiently, by trial and error, he got himself righted.
He pushed off again, carefully, to get some headway, then arched his back and kicked out. The waldo responded with a great tail-slashing leap into the air.
The dolphin was almost a kilometer off. As he reached the top of his arc, Jacob saw her fall gracefully from a height of ten meters to slice smoothly into the swell below.