Chapter One
The Galápagos Rift.30 Degrees South, 90.30 Degrees West
He was gliding on the edge of the abyss.
Below him yawned the watery blackness of a frigid underworld, where the sun had neverpenetrated, where the only light was the fleeting spark of a bioluminescent creature.Lying prone in the form-fitting body pan of Deep Flight IV, his head cradledin the clear acrylic nose cone, Dr. Stephen D. Ahearn had the exhilarating sensationof soaring, untethered, through the vastness of space. In the beams of his winglights he saw the gentle and continuous drizzle of organic debris falling from thelight-drenched waters far above. They were the corpses of protozoans, drifting downthrough thousands of feet of water to their final graveyard on the ocean floor.
Gliding through that soft rain of debris, he guided Deep Flight along theunderwater canyon's rim, keeping the abyss to his port side, the plateau floorbeneath him. Though the sediment was seemingly barren, the evidence of life waseverywhere. Etched in the ocean floor were the tracks and plow marks of wanderingcreatures, now safely concealed in their cloak of sediment. He saw evidence of man aswell: a rusted length of chain, sinuously draped around a fallen anchor; a soda popbottle, half-submerged in ooze. Ghostly remnants from the alien world above.
A startling sight suddenly loomed into view. It was like coming across an underwatergrove of charred tree trunks. The objects were black-smoker chimneys, twenty-foottubes formed by dissolved minerals swirling out of cracks in the earth's crust. Withthe joysticks, he maneuvered Deep Flight gently starboard, to avoid thechimneys.
"I've reached the hydrothermal vent," he said. "Moving at two knots, smoker chimneysto port side."
"How's she handling?" Helen's voice crackled through his earpiece.
"Beautifully. I want one of these babies for my own."
She laughed. "Be prepared to write a very big check, Steve. You spot the nodule fieldyet? It should be dead ahead."
Ahearn was silent for a moment as he peered through the watery murk. A moment laterhe said, "I see them."
The manganese nodules looked like lumps of coal scattered across the ocean floor.Strangely, almost bizarrely, smooth, formed by minerals solidifying around stones orgrains of sand, they were a highly prized source of titanium and other preciousmetals. But he ignored the nodules. He was in search of a prize far more valuable.
"I'm heading down into the canyon," he said.
With the joysticks he steered Deep Flight over the plateau's edge. As hisvelocity increased to two and a half knots, the wings, designed to produce theopposite effect of an airplane wing, dragged the sub downward. He began his descentinto the abyss.
"Eleven hundred meters," he counted off. "Eleven fifty..."
"Watch your clearance. It's a narrow rift. You monitoring water temperature?"
"It's starting to rise. Up to fifty-five degrees now."
"Still a ways from the vent. You'll be in hot water in another two thousand meters."
A shadow suddenly swooped right past Ahearn's face. He flinched, inadvertentlyjerking the joystick, sending the craft rolling to starboard. The hard jolt of thesub against the canyon wall sent a clanging shock wave through the hull.
"Jesus!"
"Status?" said Helen. "Steve, what's your status?"
He was hyperventilating, his heart slamming in panic against the body pan. Thehull. Have I damaged the hull? Through the harsh sound of his own breathing, helistened for the groan of steel giving way, for the fatal blast of water. He wasthirty-six hundred feet beneath the surface, and over one hundred atmospheres ofpressure were squeezing in on all sides like a fist. A breach in the hull, a burst ofwater, and he would be crushed.
"Steve, talk to me!"
Cold sweat soaked his body. He finally managed to speak. "I got startled — collidedwith the canyon wall — "
"Is there any damage?"
He looked out the dome. "I can't tell. I think I bumped against the cliff with theforward sonar unit."
"Can you still maneuver?"
He tried the joysticks, nudging the craft to port. "Yes. Yes." He released a deepbreath. "I think I'm okay. Something swam right past my dome. Got me rattled."
"Something?"
"It went by so fast! Just this streak — like a snake whipping by."
"Did it look like a fish's head on an eel's body?"
"Yes. Yes, that's what I saw."
"Then it was an eelpout. Thermarces cerberus."
Cerberus, thought Ahearn with a shudder. The three-headed dog guarding the gates ofhell.
"It's attracted to the heat and sulfur," said Helen. "You'll see more of them as youget closer to the vent."
If you say so. Ahearn knew next to nothing about marine biology. Thecreatures now drifting past his acrylic head dome were merely objects of curiosity tohim, living signposts pointing the way to his goal. With both hands steady at thecontrols now, he maneuvered Deep Flight IV deeper into the abyss.
Two thousand meters. Three thousand.
What if he had damaged the hull?
Four thousand meters, the crushing pressure of water increasing linearly as hedescended. The water was blacker now, colored by plumes of sulfur from the ventbelow. The wing lights scarcely penetrated that thick mineral suspension. Blinded bythe swirls of sediment, he maneuvered out of the sulfur-tinged water, and hisvisibility improved. He was descending to one side of the hydrothermal vent, out ofthe plume of magma-heated water, yet the external temperature continued to climb.
One hundred twenty degrees Fahrenheit.
Another streak of movement slashed across his field of vision. This time he managedto maintain his grip on the controls. He saw more eelpouts, like fat snakes hanginghead down as though suspended in space. The water spewing from the vent below wasrich in heated hydrogen sulfide, a chemical that was toxic and incompatible withlife. But even in these black and poisonous waters, life had managed to bloom, inshapes fantastic and beautiful. Attached to the canyon wall were swayingRiftia worms, six feet long, topped with feathery scarlet headdresses. He sawclusters of giant clams, white-shelled, with tongues of velvety red peeking out. Andhe saw crabs, eerily pale and ghostlike as they scuttled among the crevices.
Even with the air-conditioning unit running, he was starting to feel the heat.
Six thousand meters. Water temperature one hundred eighty degrees. In the plumeitself, heated by boiling magma, the temperatures would be over five hundred degrees.That life could exist even here, in utter darkness, in these poisonous andsuperheated waters, seemed miraculous.
"I'm at six thousand sixty," he said. "I don't see it."
In his earphone, Helen's voice was faint and crackling. "There's a shelf jutting outfrom the wall. You should see it at around six thousand eighty meters."
"I'm looking."
"Slow your descent. It'll come up quickly."
"Six thousand seventy, still looking. It's like pea soup down here. Maybe I'm at thewrong position."
"...sonar readings...collapsing above you!" Her frantic message was lost in static.
"I didn't copy that. Repeat."
"The canyon wall is giving way! There's debris falling toward you. Get out ofthere!"
The loud pings of rocks hitting the hull made him jam the joysticks forwardin panic. A massive shadow plummeted down through the murk just ahead and bounced offa canyon shelf, sending a fresh rain of debris into the abyss. The pings accelerated.Then there was a deafening clang, and the accompanying jolt was like a fist slamminginto him.
His head jerked, his jaw slamming into the body pan. He felt himself tiltingsideways, heard the sickening groan of metal as the starboard wing scraped overjutting rocks. The sub kept rolling, sediment swirling past the dome in adisorienting cloud.
He hit the emergency-weight-drop lever and fumbled with the joysticks, directing thesub to ascend. Deep Flight IV lurched forward, metal screeching against rock,and came to an unexpected halt. He was frozen in place, the sub tilted starboard.Frantically he worked at the joysticks, thrusters at full ahead.
No response.
He paused, his heart pounding as he struggled to maintain control over his risingpanic. Why wasn't he moving? Why was the sub not responding? He forced himself toscan the two digital display units. Battery power intact. AC unit still functioning.Depth gauge reading, six thousand eighty-two meters.
The sediment slowly cleared, and shapes took form in the beam of his port wing light.Peering straight ahead through the dome, he saw an alien landscape of jagged blackstones and bloodred Riftia worms. He craned his neck sideways to look at hisstarboard wing. What he saw sent his stomach into a sickening tumble.
The wing was tightly wedged between two rocks. He could not move forward. Nor couldhe move backward. I am trapped in a tomb, nineteen thousand feet under thesea.
"...copy? Steve, do you copy?"
He heard his own voice, weak with fear: "Can't move — starboard wing wedged — "
"...port-side wing flaps. A little yaw might wiggle you loose."
"I've tried it. I've tried everything. I'm not moving."
There was dead silence over the earphones. Had he lost them? Had he been cut off? Hethought of the ship far above, the deck gently rolling on the swells. He thought ofsunshine. It had been a beautiful sunny day on the surface, birds gliding overhead.The sea a bottomless blue...
Now a man's voice came on. It was that of Palmer Gabriel, the man who had financedthe expedition, speaking calmly and in control, as always. "We're starting rescueprocedures, Steve. The other sub is already being lowered. We'll get you up to thesurface as soon as we can." There was a pause, then: "Can you see anything? What areyour surroundings?"
"I — I'm resting on a shelf just above the vent."
"How much detail can you make out?"
"What?"
"You're at six thousand eighty-two meters. Right at the depth we were interested in.What about that shelf you're on? The rocks?"
I am going to die, and he is asking about the fucking rocks.
"Steve, use the strobe. Tell us what you see."
He forced his gaze to the instrument panel and flicked the strobe switch.
Bright bursts of light flashed in the murk. He stared at the newly revealed landscapeflickering before his retinas. Earlier he had focused on the worms. Now his attentionshifted to the immense field of debris scattered across the shelf floor. The rockswere coal black, like magnesium nodules, but these had jagged edges, like congealedshards of glass. Peering to his right, at the freshly fractured rocks trapping hiswing, he suddenly realized what he was looking at.
"Helen's right," he whispered.
"I didn't copy that."
"She was right! The iridium source — I have it in clear view — "
"You're fading out. Recommend you..." Gabriel's voice broke up into static and wentdead.
"I did not copy. Repeat, I did not copy!" said Ahearn.
There was no answer.
He heard the pounding of his heart, the roar of his own breathing. Slow down,slow down. Using up my oxygen too fast...
Beyond the acrylic dome, life drifted past in a delicate dance through poisonouswater. As the minutes stretched to hours, he watched the Riftia worms sway,scarlet plumes combing for nutrients. He saw an eyeless crab slowly scuttle acrossthe field of stones.
The lights dimmed. The air-conditioning fans abruptly fell silent.
The battery was dying.
He turned off the strobe light. Only the faint beam of the port wing light wasshining now. In a few minutes he would begin to feel the heat of thatone-hundred-eighty-degree magma-charged water. It would radiate through the hull,would slowly cook him alive in his own sweat. Already he felt a drop trickle from hisscalp and slide down his cheek. He kept his gaze focused on that single crab,delicately prancing its way across the stony shelf.
The wing light flickered.
And went out.
Continues...
Excerpted from Gravityby Tess Gerritsen Copyright © 2000 by Tess Gerritsen. Excerpted by permission.
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